Chelsea boss Jose Mourinho says striker Falcao will prove all his doubters wrong this season at Stamford Bridge.
The Colombia international's fitness level is a big question mark after a below-par campaign at Manchester United but the Portuguese insists that the striker will be very useful for the Blues.
"I don't have a secret [to revitalise Falcao]," Mourinho told reporters.
"I just feel it's a new opportunity for him.
"He comes after a bad season, but it's not up to me to speak about it or find the answers for it. I can just say that the analysis we did, and we did a lot of it, showed he is in good condition. We believe he can be very useful for us.
"He's the kind of player who's proved people wrong all of his career – at Porto, at Atletico and even at Monaco before his injury.
"It's easy to feel he's a very good professional. Even two weeks ago Mr Van Gaal said he he has nothing negative to say about him as a person or a professional.
"He's a guy who always tries to be ready for the team and ready to work. We believe he can be very important for us."