Arsenal fans lamenting the sight of Cesc Fabregas in a Chelsea shirt can seek comfort in the fact that Jose Mourinho would obviously swap him for Mesut Ozil if given the chance.
Arsene Wenger rejected the chance to re-sign the former Arsenal captain, instead allowing him to sign for their west London title rivals. Fabregas later admitted the presence of Ozil made it impossible for Wenger to find a place for him in the squad.
Plenty of Arsenal fans, bitter from the sight of Fabregas in a Chelsea shirt, took to social media to argue that Fabregas would be better than Ozil, who, by some accounts, had a poor first season in the Premier League.
However, Arsenal fans will do well to realise that the very man who signed Fabregas would take Ozil over the Spaniard any day. Obviously Mourinho would never admit it, but his latest comments on the German playmaker provide plenty of evidence.
The Special One is never short of a compliment when asked about Ozil, who he helped develop during his three-year stint as Real Madrid manager.
On Thursday, Mourinho said on his Yahoo! blog: "Mesut I know well from our time together at Real Madrid.
"He’s a very sensitive boy. He needs the confidence of the others. The need to believe in him."
In December he said: "He's a phenomenal player. He's one of those players that you buy and you complete the puzzle of your team."
And when Ozil signed for Arsenal, Mourinho said: "Ozil is unique, there is no copy of him, not even a bad one," he said.
"He is the best No. 10 in the world. He made things easier for me and his team-mates with his vision of the game and the decisions that he made.
"Everybody loves him and you can see a bit of [Luis] Figo and [Zinedine] Zidane in him."
Praise from Mourinho is something only very few players have earned. The harsh taskmaster is famed for his high standards; just ask Juan Mata and Eden Hazard. And it is therefore clear that Ozil is an exceptional talent; one which Mourinho would clearly love to have in his Chelsea team.
Having missed the chance to sign him last season, Mourinho has no choice but to accept the fact that a transfer from Arsenal to Chelsea is completely unviable. Instead Mourinho was forced to sign who he deems a lesser player than Ozil - Fabregas.
Arsenal fans may have hated the fact that Wenger rejected Fabregas but they can be sure Mourinho felt worse to see one of his favourite players in the world sign for one of Chelsea's main rivals.
If Wenger offered Mourinho the chance to swap Ozil with Fabregas, he would bite Wenger's hand off and probably chuck a sizeable amount of cash into the bargain as well.
The Arsenal manager would never do that because he is under no illusions either. Having developed Fabregas into the player he is, Wenger obviously holds plenty of sentimentality towards Fabregas, but the Frenchman knows Ozil is the better player and couldn't risk undermining him by re-signing Fabregas.
So even though Chelsea fans are having fun gloating about Fabregas wearing the famous blue shirt instead of a red one, Arsenal fans should remember that, in Mourinho's eyes, Wenger has the better player, one which the Special One would love to take off their hands.