Alexandre Pato, former AC Milan Brazilian attacker had been a free agent for a while. His last apperance was in the Brazilian league with Sao Paolo. The player expressed his desire to return to Europe, and Italy more specifically before and even spoke of a possibility to play for AC Milan once again and partner with Ibrahimovic (you can read the interview here)
Now, however, it seems that a return for Pato to the Serie A is unlikely (he was also linked to Fiorentina). He has officially moved to the United States to play in the MLS with Orlando City SC.