The German playmaker has begun his Gunners career in impressive fashion and according to his fellow countryman, will only get better the more he becomes comfortable living in his new environment.
"Mesut can play football, that is what his aim is to be here to do, so it is just the little details," Mertesacker told Sky Sports.
"It is things like how to get on [in London], how to come to the training ground, to get to whatever he wants to go. It is just a quick call or a text, you can help him out.
"I need to [help Ozil settle], because it is very important to get him into the squad quickly, so that he can adapt and play with freedom.
"That is what he is - his vision is enormous and with him we are more dangerous and can compete at the higher levels.
"We try to make it comfortable for him to adapt as quickly as possible and it fits.
"We can expect a lot [more] from him in the coming weeks, you could see that we needed his contribution and he is the right addition."
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