A new video clip has surfaced which shows Anderson Silva dropping a sparring partner with a flying knee, but apparently not everyone is convinced that the footage is legit.

Silva will make his long awaited return to the Octagon on January 31st, when he battles Nick Diaz at UFC 183. It will be the first time the legend has fought since December, 2013, when he snapped his leg while facing middleweight champ Chris Weidman for a second time.

Well, according to a follow up report from MMA Fighting.com, the man who gets blasted by Silva’s knee in the clip, is Team Nogueira’s Douglas Moura. At a recent media luncheon, Alexander Gustafsson and Phil Davis were shown the clip, and apparently the footage raised a few questions for them.

Davis wasn’t sure Moura was knocked out, since he didn’t look “stiff.” In addition, Davis wondered why Silva would keep hitting his teammate, if in fact, he had just knocked him out. Alliance MMA head coach, Eric Del Fierro, also stated he “would have quit that gym right then and there,” since no one came to Moura’s assistance.

As far as Gustafsson, apparently he thought the footage was a little fish, as he joked Silva gave Moura “a hundred bucks after practice.” How about that?

You can see the video clip by heading here.

Leading up to the fight, of course, there’s been a lot speculation as to whether Silva can be the ridiculously agile and dangerous striker he once was, considering what went down at UFC 168. Reports coming out of Silva’s camp say he has recaptured his legendary form, but of course, we’ll know more come January 31st.

Silva-Diaz will headline UFC 183, which will be hosted by the MGM Grand Garden Arena in Las Vegas. Diaz will be fighting for the first time since March, 2013, when he was decisioned by Georges St-Pierre.

Gustafsson, meanwhile, is getting ready to fight Anthony Johnson at UFC on FOX 14, which will go down at Stockholm’s Tele2Arena on January 24th. Davis is also booked to fight at the event, as he’ll take on Ryan Bader.

(Update: MMA Fighting.com has posted a follow up report, in which Moura says he was not KO’d by Silva. Further,  Moura says the Brazilian star stopped hitting him “for real” upon realizing he was “dizzy”)