The veteran signed as a free agent from AS Roma on Friday.
He said, “I'm delighted, I feel really good. I'm happy to be an Inter player and I can't wait to start training with the team and playing in the Inter shirt.
"I don't know why, but I've managed to play very well against Inter. I've scored and provided an assist. It was great to face the Nerazzurri, but now I can't wait to play and score in this shirt.
"I always dreamt of playing in the most important leagues in the world. I'm happy that I've already spent three years in Italy, and now I'm proud to be an Inter player. There are children that look at me and have the same dream I had. They want to be part of Serie A and I hope to be an example for them."
He added: "(Youri) Djorkaeff was one of my idols; when I was young, I always used to follow him, and I also have a photo with him. Youri was an exceptional player, he scored many goals at Inter and left his mark on the Club's history. I also want to leave a mark and win trophies with this team as we look to achieve our objectives.
"Obviously, I can't wait to get going. I'd like to thank the fans for the support they've shown me and the messages I've received. We look forward to seeing them at the stadium with the aim of winning together."