The striker arrived from Parma last week.
"Unfortunately Ramadan coincided with pre-season training this year, but things are going well anyway and I am happy with my performance so far," he told Inter Channel.
"I missed two penalties in a friendly, but it's better to miss them now than when it counts! I am very happy at Inter, which is a great club.
"At the start I struggled to adapt to Serie A with Stefano Pioli at Bologna. I was fine with the ball at my feet, but didn't know how to move off the ball, which in Serie A is more important than anywhere else.