Martin Keown says that Manchester United need to hope that Falcao can have a similar effect on the side to that which Mesut Ozil had on the Arsenal side.
Ozil joined the Gunners in the summer of 2013 in a transfer which boosted the whole club and announced the end to their financial prudence that Arsene Wenger had operated with for a number of seasons previously.
It was a deal which proved to be the catalyst behind the excellent start which the club made to the 2013/14 campaign and Keown, a former Gunners player-turned pundit, believes that United need their new Colombian to have a similar impact.
"They will hope he has a similar effect to when Mesut Ozil joined Arsenal last year - not just a good player but a galvanizing force for the whole club," he said in a piece for the Daily Mail.
"He’s got to convince everybody he is fully fit and as deadly as he was before that horrific injury. But it's a huge gamble for United - they have a lot riding on whether he succeeds or not and it's a big risk."
Falcao comes in at a time where United are at their lowest point in recent memory.
The club were expected to be resurgent this season under Louis Van Gaal's stewardship, but they will be hoping that Falcao has more of an initial impact that their Dutch manager has.
Van Gaal's side are yet to win a competitive game this campaign and they are already playing catch-up on the rest of the top-four challengers in the league.
Although they have spent heavily to try and arrest the slide that they are currently on, there is no guarantee that it won't take a while for everyone to fit in and clearly Keown feels that there are some doubts still lingering over Falcao's arrival.
The Colombian has had a troublesome knee throughout his career and he is currently on his way back from a long-term injury, but if he can find his top form there can be no questioning his ability.
The first chance the powerful forward will have to showcase his talents will be against QPR at the weekend and it is a game which Keown believes could be a good chance for United to kick-start their season with.
The BBC Sport pundit believes that the international break may have benefitted the squad and he feels they have a good chance of winning on Sunday.
"If things are not going well at your club, sometimes going away on international duty can be a nice break from that bad streak," he said. "A good result with your country can remind you that you actually can still win a game of football. You come back refreshed, there is less pressure and it can click immediately."