Romelu Lukaku admits he will "never forgive" Andre Villas-Boas following their time together at Chelsea.
The Belgian moved to Stamford Bridge when he was a teenager in 2011 from Anderlecht.
But Lukaku spent much of his debut season with the reserves and was omitted from the Champions League squad.
He didn't make his full Chelsea debut until Villas-Boas was shown the door and replaced by Roberto Di Matteo.
The Italian opted to include him in the group that pulled off a shock Champions League triumph.
And Lukaku maintains he will always respect Di Matteo for integrating him into the group but forever hold a grudge against his predessecor.
"Di Matteo told me that I would stay with the group until after the final," he told Het Laatste Nieuws.
"He thought everyone should come along, including the ones who were suspended and the few boys who were not in the Champions League squad. I am also grateful to him for that.
"This win is one of the things I’ve always dreamed about. You want to celebrate something like that with the team at that time. That is nice in itself at the age of nineteen.
"I am happy for the whole club, but there is one man who took a lot from me: the previous trainer (Villas-Boas). I will never forgive him for that.
"Once I had to play in the front left, another time in the front right. You don't develop that way.
"Then at some point you have to think about yourself. So I told the club what I thought of it. I know, Villas-Boas was also under pressure.
"But that’s why he didn’t have to treat me like that. Di Matteo approached me completely differently, he immediately involved me in everything. That should have been much earlier. Really, I never forgave the previous coach."
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