The junior coach of Manchester United signing Amad Diallo says he needs to hit the gym now he's in England.

Denis Cerlini worked with Diallo at Boca Barco before he was spotted by Atalanta.

He told BBC Sport: "Physically, Amad wasn't the strongest at Boca Barco, and his heading abilities aren't good.

"He must add a few kilograms of weight in order to survive in the Premier League."

Cerlini also opened up on how Diallo joined Boca Barco, adding: "We didn't discover Amad, but rather he just came to us. It was a great stroke of luck.

"From the very first moment, it was evident the kid was special. He was very bold and quick, possessed great technique and a strong shot, and executed everything at great speed.

"Amad was popular in the dressing room. He made a lot of friends, learned Italian and seemed to be a very determined guy who knew exactly what he wanted."