Brentford boss Thomas Frank has questioned the hype around Cristiano Ronaldo's return to Manchester United.

Frank isn't convinced Ronaldo - at 36 - will make the impact many are predicting following his arrival from Juventus.

The Dane said, "The wild thing is that he is 36 years old. He is coming back to United and a lot is being written about it being just before he makes them the championship favourite.

"He may be the missing piece in the puzzle, which is completely insane if a man of 36 is to be. But I still think he's good. However, he is not as good as he was when he was at his best.

"It is of course funny that he comes to the Premier League. That, I think, most people think."