Aston Villa boss Unai Emery says Jhon Duran is capable of being "world class".

However, Emery says patience will be needed.

“With Jhon Duran I have my challenge as a coach with him," said Emery. “He is young and his potential could be great, to be the level of one of the better strikers in the world in the future.

“But it is about trying to build and do a process with him. He is still young and getting experience.

"Each training day here is important to him for when he is facing each match, to feel comfortable and face the level of the players we are facing."