The midfielder has been linked with Arsenal this week.
Melo said: "For me 2010 was very positive. After all, I had a good World Cup, but also managed to return to my best form.
"I don't believe that everyone thought I could manage to win back the club and the fans after a negative season. It was a challenge for me and I am proud to have managed to win it.
"Now I must continue playing like this in order to win together with my teammates.
"We have understood that to get results we have to be united and this is really what's happening.
"There is a great team spirit and this is the most positive aspect."