Maniche admits he could easily have left Atletico Madrid this summer.
The Portugal international midfielder said: "It is true, but we spoke a lot and we decided that the best thing, as much for the club as for me, was that I stayed.
"I have a contract here and I want to fulfill it. I want that the people who gambled on me have the certainty that they have guessed right when making such a concerted effort to get me here.
"I promise to try to play well, although for this I need the team, because one player does not make a team."