Mesut Ozil believes Arsenal can challenge for the Premier League title this season.
The 24-year-old was introduced to the media on Thursday, having been on international duty with Germany since his club record move to the Emirates on deadline day.
Ozil, who joined the Gunners for £42.5m from Real Madrid, scored a penalty in Germany's 3-0 win over the Faroe Islands on Tuesday and is expected to make his Premier League debut against Sunderland this Saturday.
Arsenal have begun their Premier League campaign with two victories and one defeat, and Ozil is confident they have the quality to be title contenders.
Asked if Arsenal can challenge for the title, he said: "Of course, definitely. I know the team and the talent we have here. Every player wants to be successful and Arsenal are one of the biggest clubs in the world.
"We definitely want to achieve something with this team - that is what we work. Of course it will be very difficult because the league is the strongest in the world. But we will give everything to achieve success.
"We want to play attractive football to improve but of course also successful football. I can't promise to win trophies but I can promise as a team we can give our all to win trophies."
Ozil said that he consulted his international team-mates, Lukas Podolski and Per Mertesacker, about the club but his central reason for signing for the Gunners was Arsene Wenger.
Reports in Madrid suggested that Ozil had been allowed to leave after his professionalism and lifestyle were questioned.
But the German international insists his performances for Real Madrid, scoring nine goals in 32 games last season, prove his professionalism and commitment.
"I don't want to say anything bad about Madrid because I had three wonderful years there," he said. "I have great friends there and also we achieved a lot with the club.
"The people who know me, know how professional I am and I think over the past years one can see how many games I have played - 159 games - and if you are not professional in your life then I don't think you can play that many games.
"So people know how professional I am. This is what counts and I don't care about all the rumours.
"I have a new task here and I am just looking ahead. We have big goals and we will work very hard to achieve these goals."