Dragan Stojkovic is spending the week at Chelsea.
The legendary former Yugoslavia international is now manager of Japanese side Nagoya Grampus Eight and had been invited by his Chelsea counterpart Carlo Ancelotti to study his methods and the facilities.
"I would like to thank Carlo who is my friend and Chelsea for giving me the chance to see a club who is one of the biggest in the world.
"I know Carlo because we played against each other when I was a player in Red Star Belgrade and we played in the European Cup against AC Milan. It was a very memorable game, we played 1-1 at Milan and in the return game in Belgrade we were winning 1-0 and 20 minutes before the end the fog came and the game was cancelled.
"So we were very close to eliminating AC Milan. We replayed the game and it was 1-1 and from penalty kicks AC Milan qualified. They won the Champions League after that, and the big Milan was born in that time, so I know him very well and he is a nice person.'
The 1989 European Cup win was the first for the revered Gullit-Van Basten-Rijkaard side with Ancelotti deep in the heart of the midfield.
"It was good to have my friend Stojkovic here at Cobham," Ancelotti said today. 'He asked to visit and watch some of our training sessions. This is something I tried to do often a few years ago when I began in club football to give me a more rounded knowledge of the game.
"He is doing very well at Nagoya Grampus Eight right now and because it so far away, I don't mind sharing a few of my secrets with him."