The Belgium international forged a close relationship with Pierre van Hooijdonk during their time together at Feyenoord and credits the Dutchman with helping him develop as a player.
It is fair to say that Van Hooijdonk is not remembered fondly by the blue half of Glasgow.
He established himself as a fans' favourite during his two years at Celtic, netting three times in Old Firm derbies.
And he returned to haunt Rangers two years ago with Feyenoord when his two goals played a part in sending the Ibrox side out of the UEFA Cup.
But Buffel has revealed that the Holland international played an important part in his development as a footballer.
He said: "I had a good relationship with Pierre in the team and away from football. We played a lot of games together and linked up well.
"I think people underestimate him as a player - he has a lot of good skills on the ground as well as in the air.
"If you play next to someone in a certain position for a long period, it's only natural that the communication and partnership develops.
"I learned a lot from him as I was developing into the player I am now.
"Of course, I still have much more to add to my game but hopefully I can play well this weekend and help us get the win."
Buffel has played in two Old Firm derbies since his January move to Glasgow but both those games were at Celtic Park and he admits he has no idea what to expect at Ibrox this weekend.
He added: "I think it will be a great atmosphere and I'm very much looking forward to it.
"Our fans were fantastic at Parkhead but I can't imagine how it will be at Ibrox. I'm eager to find out."
Celtic head into the game defending a two-point lead at the top of the Bank of Scotland Premier League table.
A win for Rangers could prove crucial if they are to have a realistic chance of winning the championship but Buffel insists they can handle the pressure.
He told the Rangers News: "It would be better if we were top of the table but we are not and must get on with that.
"We have to win to get above them and we are all very clear on what we must do during the match.
"There is a lot of pressure in this fixture but that is what makes it so special and it`s our job to cope with it."