AC Milan coach Massimiliano Allegri would happily welcome Kaka back to the San Siro.
The Real Madrid midfielder announced his intention to leave the club on Thursday and it was reported that the Rossoneri has entered the race to sign him.
Allegri spoke about the possible return to the press before Milan's home game with Cagliari and said: "Kaka would strengthen Milan because he has huge quality and personality.
"He would give big enthusiasm to the supporters and the squad. We will see."
Milan chief Adriano Galliani was quoted earlier in the week as saying a move for Kaka was unlikely, however this may have changed after it was reported a new bid for CSKA Moscow midfielder Keisuke Honda was rejected.
Allegri added: "I'm confident that both the president and Mr Galliani have the intention to keep Milan at a high level, despite the financial difficulties and the difference in salaries with other clubs in Europe.
"Surely Kaka will be a big help to the team on a technical level."
The 31-year-old Brazil international is a wanted man with another former club also expressing an interest in re-signing him.
Brazilian side Sao Paulo's vice-president Joao Paulo de Jesus Lopes admitted he would like to bring Kaka back to where he began his career.
He said: "We understand that the financial conditions make this a more distant possibility; his salary is very high.
"If that point can be sorted out then we have interest in Kaka no doubt."
However a move seems unlikely as he would only be able to join Sao Paulo in January as the window for Brazilian clubs to sign foreign-based players closed in July.