Derek Fisher wrote on Twitter this afternoon that he’s returned from China. Whether he stopped off at the office of Lakers general manager Mitch Kupchak on his way home from LAX is anyone’s guess. He can sign with the Lakers (or any other team) starting at 9:01 p.m. tonight). I wouldn’t be surprised if it takes a while longer before a deal is struck. Our friends at ESPNLos Angeles.com reported Tuesday that Kupchak has been in contact with Fisher’s agent, Rob Pelinka, but Kupchak declined to reveal any details. Fisher was in China representing the NBA at the World Expo.