Mesut Ozil believes Arsenal can finish the season as Premier League champions, following his £42.4m move from Real Madrid.
The 24-year-old Germany international was unveiled to journalists at a press conference on Thursday alongside manager Arsene Wenger - and Ozil feels he has swapped one of the world's biggest clubs for another.
"Of course [we can challenge for the title]. This is one of the biggest clubs in the world," Ozil told reporters. "I had a very good time in Madrid, but I have made the next step. I'm in the strongest league in the world."
The former Werder Bremen and Real Madrid star said it felt "great" to become the latest member of the Gunners' squad, and revealed that compatriots Per Mertesacker and Lukas Podolski had nothing but "positive things" to say about the north London outfit.
Ozil also praised Wenger for his role in the transfer, adding: "When I talked to Arsene on the phone he was full of respect and as a player I need the respect.
"I'm sure the boss will improve me and I'm proud to be part of the team."
The German is also relishing the prospect of playing in the English top flight, ahead of his expected Gunners debut against Sunderland this Saturday.
He continued: "I've watched a lot of Premier League games, of course it's very physical but this is a man's sport."