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The lunchtime game saw Manchester United lose 3-0 at Everton, but Wayne Rooney and Marouane Fellaini's sorry return to Goodison Park is nothing compared to the reunion in today's 16:00 encounter.
Cesc Fabregas' return to Arsenal.
The Gunners have won their last eight League games but does anyone believe that Wenger’s side will earn their first win over Mourinho’s Chelsea at the 13th attempt?
What is more certain is the likely hostile reception for Fabregas, who plays at Arsenal for the first time since joining Chelsea.
But who will come out on top? Stay tuned to Standard Sport for all of the action!
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WHAT THEY SAID
Speaking ahead of the match, Arsene Wenger urged Gunners fans not to jeer Fabregas on his return to the Emirates, and give him the 'respect he deserves'.
“I want every [player to be respected] and Cesc Fabregas when he comes to the Emirates on Sunday to be respected like he deserves,” said the Arsenal manager.
“The regret I have is that he wanted to leave here," he continued.
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"This club and myself had a very positive influence on Cesc’s life, so I would be a bit uncomfortable to have to justify today why he is not here. I believe I would rather it was the other way around.”