The Italian was linked with a move away from the Club this summer, but says he could not be happier with the way in which his fortunes have turned around.
"As the boss said recently, I was ready to go and play somewhere," he told the Official Arsenal Matchday Programme. "I did some good work last year and think I deserved to be playing football - I couldn't be a number three.
"Now things have changed and the boss seems happy with how I'm doing at the moment. I'm pleased to give my help to this Club again, and will do my best to become the number one."