Mesut Ozil believes the Premier League is the "strongest league in the world" and wants to "prove" himself with Arsenal.Ozil believes he can thrive in England's top tier under Arsene Wenger, having held lengthy conversations with the Arsenal boss on the telephone. In an interview with the German Football Association's official website, Ozil said: "At the weekend, I was certain that I would stay at Real Madrid. "But afterwards I realised that I did not have the faith from the coach or the bosses. I am a player who needs this faith and that is what I have felt from Arsenal, which is why I have joined. "I am a player who needs this faith and that is what I have felt from Arsenal, which is why I have joined. "I am really looking forward to it because I have the faith of the coach. I had spoken to him at length on the telephone, he explained his plans and that he has faith in me - that is what I need as a player."