Vitesse Arnhem coach Peter Bosz has hailed the quality of Bertrand Traore.
The young attacker spent this season on-loan at Vitesse from Chelsea.
"Of course, nothing is certain in football, but I assume that he is not playing here next year," said the coach to Voetbal International.
"What do I expect? I expect him just to stay with Chelsea next season. They will not sell him, not for €20 million. Nothing.
"I think he is going to get to the absolute top. In my eyes, he's going to be so. I think he is quite complete."