"I don't think his reaction was any different from my reaction, I mean I was very disappointed, I was sad, I was unhappy," said Buck, speaking at one of the club's 'Star on a Stool' evenings. "But I think there are a lot of stories that Roman called crisis meetings and was very upset and ranting and raving in the dressing room, that's total rubbish, it was all untrue. He was unhappy like all Chelsea fans were unhappy.
"You're a footballer and I think you know that just doesn't happen, players have a certain approach and attitude ingrained in them and it's very difficult for them to change.
"But, having said that, during the course of the last nine months I think we have seen some examples of stylish, entertaining, fun football and would expect to see more of that as time progresses. We never thought this was going to be an overnight change."
Buck also backed Abramovich to continue his association with Chelsea in the coming years.
"He is committed to the long term," said Buck. "He bought the club, he loves the club, he's a Chelsea fan. He is here for the long term.
"He has put a lot of money into the club and I guess I would say no matter how rich you are, no matter how much money you have, you will notice when you invest £500 million into something. So it is not like something he will walk away from and say he is not interested anymore."