The two men worked together at Real Madrid, but Arsenal boss Arsene Wenger is unlikely to be too impressed with his record signing considering his poor relationship with the Chelsea manager.
The photo can be viewed HERE.
Wenger v Mourinho
Wenger and Mourinho came to blows on the Stamford Bridge touchline after Gary Cahill produced a full-blooded challenge on Alexis Sanchez, which left the Gunners' boss incensed, but the Football Association have since confirmed that the French coach will not face any further action for the incident.
Arsenal went on to lose the game 2-0, thanks to goals from Eden Hazard and Diego Costa, leaving the north London outfit eighth in the Premier League table - nine points behind Mourinho's side.
Ozil heavily criticised
Ozil, not for the first time in his Arsenal career, came in for particularly heavy criticism after yet another disappointing performance.
The Germany international somehow completed the full 90 minutes, despite struggling to make an impact against the Premier League title favourites.
And Mourinho was spotted putting an arm around the 25-year-old's shoulder after the match, prompting speculation about what the Portuguese coach might have been saying to the former La Liga star.
Mourinho a big fan of Ozil
Last December, Mourinho publicly praised Ozil, telling reporters: "Mesut is a phenomenal player, one of these players that you buy to complete the puzzle of your team. You don't need time with him, you need nothing. The player just arrives. His quality and his maturity and his leadership … you put him in and you know automatically your team becomes better.
"There are many ways to improve your team. One of them is to work with young players and another is to go directly to the market and buy one of these finished products. Arsenal had the chance to do it with Mesut and they did very well."
However, it would be interesting to hear Mourinho's take on whether or not Ozil is currently failing to produce his best form because of Wenger's tactics.
The German World Cup winner has been deployed in his favoured No. 10 role in recent weeks and has flourished, but spent much of Sunday's match playing back out on the wing.
Once again, he failed to make any real impact, and was arguably the worst performer on the pitch.
For £42.4 million, Arsenal fans expected to see Ozil helping the Gunners secure points almost single-handedly. But that hasn't been the case since he completed his surprise transfer from Real Madrid just over a year ago.
Could Mourinho bring the best out of Ozil once again if Chelsea brought the playmaker to the Bridge - or is he finished already? Have your say in the comments section below.