The Switzerland international has been out-of-favour at The Emirates this season, making just two appearances for the Gunners in the Capital One Cup.
The 26-year-old centre-half was fourth in the pecking order at Arsenal, and he hopes his performances over the coming months will help him earn a permanent deal at the Bundesliga outfit.
“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 scored once in 158 appearances for the north London side after making his debut in a 3-1 victory over Everton in the League Cup in 2004.
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