Fernandes said this after the Uruguay forward scored a goal in Red Devils’ Europa League quarter-final second-leg 2-0 win over Granada on Thursday night at Old Trafford.
The Old Trafford club defeated Granada and qualified for the Europa League semi-final on a 4-0 aggregate.
Ole Gunnar Solskjaer’s side will now face AS Roma in the last-4 later this month.
Speaking to reporters at the final whistle, Fernandes said at his post-match press conference: “Everyone knows Cavani, everything he does, he is a proper striker, we know the qualities of our players.”
He added, “It was a good game, Europa League is always difficult, they can create danger, but we controlled the game, had the ball a lot.
“I don’t think it was bad-tempered. We keep moving, do the right things, 2-0 again is really good for us.
“Now is the time to take the next step and win a semi-final, but we must focus on the next game, which is the league.”