Ozil admits he's stayed in touch with Flamini since he left the Gunners last year.
He told SFR Sport: "We have a very good relationship with him and me. I consider him my brother. We are still in contact. We had a lot of fun playing together.
"He, like (Karim) Benzema, are two great players who are a treasure for France. I am delighted to have met them."
The Sun reports Nydam has been a long-term target for the Gunners.
He has less than two years left on his current contract at Portman Road. Born in Zimbabwe, he has featured at Under-19 level for England.
Gunners boss Arsene Wenger believes they can land Nydam for €2m.