The striker won the Europa League and League Cup in his first season at Old Trafford - but United also finished sixth in the Premier League.
Speaking at a press conference on Friday, he said: "After three months I conquered England and they said I was flying. This is only numbers.
"I know what I am able to do and I know what I will do. I come here to win. I feel excited. The lion is hungry."
Ibra added: "I feel young. I said once before I feel like Benjamin Button.
"I was born old, now I will die young. Don't worry about my age. I know I am 37 [sic] but when I came to England they all said I was old and I came in a wheelchair."