Barcelona teen Ansu Fati is turning to Cristiano Ronaldo's surgeon to fix his knee injury.

Injured in November, Fati will go under the knife again as his knee has not improved. He was examined by two experts in March, and one of those was Dr. Jose Carlos Noronha, one of the best knee specialists in the world.

He will operate on the player, and he is Juventus striker Ronaldo's most trusted doctor, reports Marca.

Dr. Noronha has also operated on a number of players who have suffered from knee trouble, notably Pepe, Radamel Falcao, Hulk, Angel Di Maria and Arjen Robben.

He is a specialist in shortening a player's recovery period, and the doctor trusts that he can do the same with Ansu, though he's not willing to offer a full assessment until he has operated on the player in Porto on Thursday.