Chelsea are chasing the former World Player of the Year, who was spotted by England cricket star Kevin Pietersen.
KP tweeted this morning: "Hope I'm not being a snitch.. BUT, I had dinner a couple tables away from KAKA last night.. Are we gonna see the great man CFC?? Hmmm.."
Pietersen was dining at Zuma restaurant in Knightsbridge. The England batsman is a well-known Chelsea fan.