Claude Makele was back at Chelsea this week to drop in on training.
The PSG midfielder met with Blues boss Guus Hiddink and told chelseafc.com: "It is a surprise visit.
"I like to do this. I am London so it is normal I come and say hello to old friends and old players. It makes me happy and I hope it makes happy the players here also."
Thirty-six last month, Makelele admits this could be his last season as a player.