The Swiss international moved to the Bundesliga in a bid to see more first-team football, and he would be open to a transfer despite the Gunners not including an option to buy in his loan deal.
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"Arsenal did not want to include a buy option," he said.
"But those things don't worry me right now. I have to perform first, to make sure Hannover want to buy me.
"As a team we have the quality to reach the Champions League.
"Everything has to work out great and we all have to stay fit. It is a high goal, but you need to have them in sport."
Djourou has made one appearance for Hannover since joining earlier this month on a six-month loan deal.