Many Real Madrid players expressed their anger/sadness when Mesut Ozil left the Spanish side to Arsenal on the deadline day. Ozil was so close to many Madrid stars especially Sami Khedira and Karim Benzema. Here is a clip where Benzema defends Ozil from an opponent player in a league match.
http://www.youtube.com/watch?v=yWq8JVT2jhI
With Arsenal linked with a January move for Benzema, Ozil could play a huge role in convincing his friend to join him at Emirates.