The Bayer Leverkusen star has been linked with a move to the Emirates this summer but insists he has a lot to improve at his current club
The Germany international was linked with a move to the Emirates as the Gunners look to build a team capable of challenging for the Premier League title.
However, he says he sees no reason to leave the BayArena and is looking forward to proving himself next season.
"I have only recently extended my contract until 2019, I'm happy at Leverkusen and I feel totally comfortable," he told Bild.
"I don't have to change. Also, my season wasn't brilliant, so I have to take the lead at a big club now.
"It was not an easy year year for everyone. After the joy of the first round, there were so many losses in the second round.
"We also lost three games in a row twice, which was uncomfortable. We'd never experienced that."