Adebayor declared: "A couple of weeks ago people were saying 'Arsenal are not going to win the [Premier League] title, they will also be out of the Champions League'. Now all of us in the squad have the confidence back because this means we can beat every single team in the world."
The African added: "We are trying to build something here again, a new chapter in Arsenal's history.
"We came to the San Siro confident we would qualify and to do it is something magnificent."
Of his goal, set up by a run and cross from substitute Theo Walcott, Adebayor admitted: "It was a simple one, right in front of the posts.
"However, it was also the most important goal I have scored in my career so far."