Romelu Lukaku has insisted that he "will never forgive" Andre Villas-Boas for the way that the Portuguese coach treated him.

Villas-Boas signed the 19-year-old from Anderlecht last summer for a fee believed to be in the region of £18m.

However, the Belgian international found his starting opportunities limited under Villas-Boas, while he was also omitted from Chelsea's Champions League squad.

"There is one person that I will never forgive for what he did to me - the previous coach," the Belgium international told Sport Wereld. "It's not just that. It was also the way he spoke to me and treated me.

"Right from the beginning, it was weird. I could not stand how he was treating me. I received no explanation.

"In training, he put me on the right or left wing. In training matches, I was a substitute with a shirt to keep swapping teams. I really learned nothing."

Lukaku made just eight Premier League appearances last season.