Alexandre Pato has said that he will always have a soft spot for AC Milan and has thanked everyone at the club for helping him in his footballing development.
The 23-year-old joined Brazilian club Corinthians on a four-year contract on Thursday.
"I wish to salute but above all to thank everyone - from the President [Silvio Berlusconi] to the many people I worked with in these unforgettable years at Milan," wrote Pato in an open letter on Milan's official website.
"I am going to Brazil, to Corinthians, so I'll have the opportunity to play consistently. It won't, however, be easy to forget Milan.
"I am and always will be very tied to this jersey, the club colours and all the Rossoneri fans. Above all at this moment my thoughts and my biggest thanks go to them."
Pato scored 51 goals in 117 Serie A appearances for Milan since joining them in 2007.