Antonio Cassano claims there is no higher platform in world football than playing for a club like Milan.
The 28-year-old agreed to join the Rossoneri in December after falling out with his former club Sampdoria.
The Blucerchiati had asked that Cassano's contract be rescinded after he had a row with Riccardo Garrone.
The court of arbitration ruled that Cassano should stay at Samp, hence Garrone's decision to let the player join Milan practically for free.
Speaking at his official unveiling, Cassano said: "I've arrived at the top. Above Milan is only sky.
"I would like to thank Silvio Berlusconi and Adriano Galliani who gambled on me in a moment of difficulty.
"I am pretty sure this will be the last club of my career. I am at the peak.
"I have made many mistakes but I have no regrets. Now it's time for me to change. I want to win and do things right.
"Lots of teams wanted me, but as soon as I knew Milan wanted to sign me, I said to myself: 'Let's go there'.
"Rino Gattuso told me that everything is perfect here. You have everything to do well. If I don't manage to succeed here, I should be locked up in a madhouse.
"I am a second striker, but I am at the service of the Coach. I am open to playing in any role in attack. All I want is to win.
"I would like to once again thank Sampdoria because I was very loved there."