TSN Hockey Insiders Bob McKenzie, Pierre LeBrun and Darren Dreger have the latest on security and safety at the Sochi Games, if the NHL is ready to expand video review, who might be available in Edmonton, could Matt Moulson be a member of the Senators, and more. Who might be available and who might be on the move in Edmonton? Darren Dreger: Sam Gagner, we know. Ales Hemsky, we know. Ryan Smyth is expected. Theres no dialog between Craig MacTavish and Ryan Smyth. The belief is that Smyth wants one more crack with a winning team to see if he can win the Stanley Cup. Hes still effective, at least in the offensive zone, so I expect his name will heat up as we get closer to the deadline. Could Matt Moulson be heading to Ottawa? Pierre LeBrun: Matt Moulson will be a very popular name as the March deadline approaches. We know hes one of the guys the LA Kings are looking at, but the Ottawa Senators are another team. A little bit of a connection with the Senators, as GM Bryan Murrays nephew Tim Murray is now GM in Buffalo. Moulsons a guy that if the Senators can stay in the playoff mix over the next few weeks, I believe they will make inquiries on him. Might Thomas Vanek, who was part of the Moulson trade, re-sign on Long Island? LeBrun: He has liked it on Long Island a lot more than he thought he would. You hear these stories about the Islanders and playing in a bad rink but Vanek has really enjoyed his time there. He loves playing with John Tavares and he likes the way hes been treated by Garth Snow, so hes got a big decision to make. I think at the end of the day hes still going to go to free agency, which makes him force the hand of Snow. For Snow, thats the number one priority; to sign Vanek before the trade deadline. How big an issue is security and safety at the Sochi Olympics? Dreger: It is a concerning issue. The threat of terrorism always is going to be concerning for a world spectacle such as this and thats not lost on neither the Players Association and National Hockey League. Both will tell you that their guest list, be it family or friends, is reducing on a week-by-week basis leading up to the Olympic Games but the NHL is confident that their safety will be insured by the Russian government and the International Olympic Organization. But if there were significant terrorist attempts or attacks prior to the Olympics in Sochi, I think that the NHL and the NHLPA also wouldnt hesitate to remove themselves from the Games. Is the NHL ready to expand video review and when? LeBrun: I think more than ever. Its all about timing and I can tell you right now that its on the GMs agenda in March when they will again tackle this. But this time, I think the league might finally get its way. We know that hockey operations has wanted to expand video review for a long time and if they get their way this year, not only will they get it moving forward but maybe even for the playoffs if they can get the owners and the NHLPA to sign off. Lots of "ifs" but certainly theres a different movement here. Bob McKenzie: I believe that Detroit goal on Saturday night was the tipping point for general managers. GMs in the past have overwhelmingly been against expanding video review but after Saturday night, I surveyed 23 NHL GMs and 22 of them said we cannot have a repeat of what happened on Saturday night. The one GM who didnt say that said they have to discuss what theyre going to do. Now, how exactly they go about that is the controversial aspect. Some guys want the coachs challenge, some guys want it only to be on the very specific play where a puck comes off the mesh, and some guys want the referees to be able to review it at the penalty bench. Its all over the map and how they process this is the controversial aspect to it. But after that goal that was scored on Saturday night, many general managers said could you imagine if the Stanley Cup was decided on a goal like that. Does anything come of Sens owner Eugene Melnyk presenting the NHL Matt Cooke investigation evidence? McKenzie: No, it doesnt. When this incident happened last season, Melnyk said that he believed in his heart that Cooke had malice and intentionally severed the tendon of Erik Karlsson. He said afterwards he was going to prove it and talked about a forensic investigation. He spent a lot of time, effort and money and put together a fully detailed medical report and presented that to the NHL in New York City on Monday. Theres not going to be any retroactive justice here, but Eugene Melnyk had his day in court, so to speak, and did what he said he was going to do. 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Bergesen was claimed off waivers from Baltimore on Friday.A Champions Cup final place is the prize on offer when Saracens face Wasps in Saturdays all-English semi-final, live on Sky Sports 1 HD. So far this season its honours even between the two Premiership sides. Saracens beat Wasps 26-16 at the Ricoh Arena in December thanks to a 21-point haul from fly-half Owen Farrell, but Wasps claimed revenge when they went to Allianz Park and smashed their hosts 64-23 in an eight-try mauling that saw Jimmy Gopperth contribute 23 points.Gopperth is in superb form after converting Charles Piutaus 80th-minute try for a thrilling 25-24 win over Exeter Chiefs in the Champions Cup quarter-final earlier in the month, while Farrell slotted five penalties and two conversions to guide Saracens to a 29-20 win over Saints in their quarter-final. The two fly-halves face off for the third time this season and their battle will be key in deciding the outcome, but it wont be the only one. We take a look at five head-to-heads as the two Premiership giants clash live on Sky Sports...Owen Farrell v Jimmy Gopperth Owen Farrell has been in fine form for club and country High-level performances are now the expected watermark for Farrell. The Saracens fly-half has been string-puller and goal-kicker supreme for the Premiership leaders this season - and from the tee for England - playing with the kind of confidence that has made him a consistent match-winner.But Gopperth has reasons to be confident too, after hitting that late winning touchline conversion to defeat Exeter in the quarter-finals. He described that kick as one of the highlights of his career but if hes to add to that story then its vital the New Zealander comes out the right side of this battle with the sure-footed Farrell. Watch highlights of Wasps thrilling Champions Cup quarter-final win over Exeter Gopperth wont be fazed by the challenge; hell be focused only on how to release Wasps dangerous outside backs. But Farrells polished style could prove the difference.Maro Itoje v Joe Launchbury Maro Itoje beats England team-mate Joe Launchbury in the lineout Its only a few weeks ago that Itoje was being tipped as an emerging international star. Now, after less than a handful of performances for England he already feels firmly established.Its an intriguing duel that pits his athleticism, growing form and enthusiasm against the experienced Launchbury.Saracens look to have the edge come lineout time, especially with their set piece anchored against another England lock, George Kruis. But its the damage Itoje is capable of doing on the opposition throw that will be of most concern to Wasps. Maro Itoje v Joe Launchbury 21 Age 25 48 Tackles 60 2 Missed tackles 11 51 Carries 51 25 Lineouts won 18 Alex Goode v Charles Piutau Charles Piutau has had a debut season to remember with Wasps Goode has been sensational this season and for many hes the form full-back in England. But if thats the case then Piutau is only a whisker behind.As Wasps showed against Exeter, they will attack from everywhere and Piutau has the strength and fleet-of-foot to beat the last defender, and the first defender too, for that matter.Goodes attacking style has been slightly more graceful but its been no less devastating. Alex Goode v Charles Piutau 59 Carries 77 484 Metres gained 714 7 Clean breaks 15 12 Defenders beaten 31 3 Tries 4 Billy Vunipola v Nathan Hughes Billy Vunipola will get Saracens over the gainline The two wrecking-ball No 8s will be in direct competition for a starting spot with England come the autumn internationals, with Fiji-born Hughes qualifying on residency grounds in June.ddddddddddddGeorge Smith insists the pair could forge a devastating combination at international level despite their similar strengths. Sky Live: Saracens v Wasps Mark McCall vows his players will attack the game Both players have been key performers in their respective clubs quests for a domestic and European double. They have scored two tries apiece in the Champions Cup and are the primary gain-line carriers for their sides, Hughes making 303 metres from 83 carries and Vunipola gaining 207m from 73 carriers. Nathan Hughes has beaten 20 defenders in this seasons Champions Cup Hughes has beaten 20 defenders in his six European appearances, two more than Vunipola, and the 24-year-olds offload ability will keep opposition defences on their toes.The battle of the breakdown could well decide which of these players have the greater influence. Deliver quick ruck ball in the right areas of the pitch, and this duo will thrive. Billy Vunipola v Nathan Hughes 23 Age 24 73 Carries 83 207 Metres gained 303 18 Defenders beaten 20 2 Tries 2 Chris Ashton v Christian Wade Chris Ashton has scored four tries in six European appearances this season One has registered six tries in a single outing. The other, five tries since returning from suspension.This is a fascintaing battle pitting two in-form finishers against each other, and theres an added dimension too with both keen to catch the interest of Eddie Jones ahead of Englands summer internationals. Ahead of Wasps European semi-final we found out the secret to the clubs return to the European top table Ashton relishes the big occasion and has become accustomed to delivering on those occasions too. Wade has his eye in after that six-try performance however, and both look certain to be involved heavily.In a straight head-to-head, Ashtons experience could well prove a determining factor.Watch Saracens v Wasps live on Sky Sports 1 HD on Saturday from 2.55pm. 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