Juan Mata trudged off the Stamford Bridge turf on Saturday after seeing his shirt number lit up on the fourth official's board.
The Spanish winger, who was replaced by Oscar in the 62nd minute against Crystal Palace, had a poor game by his own high standards and was rightly replaced by Chelsea's 22-year-old Brazilian midfielder.
Mata looked like a man disillusioned with life under Jose Mourinho when he walked off before taking his place on Chelsea substitutes' bench.
The attacking midfielder did not even acknowledge the Chelsea boss when he came off, which makes you think if the two Iberians actually have relationship.
Mata revealed just under two weeks ago that he did not fully agree with the way Mourinho did not tell his players why they were omitted from his matchday squad.
The 25-year-old said on Mourinho: "The way managers are depends on the way they understand the dressing room.
“Some managers will not give you any reasons as to why you are playing or not playing simply because they don’t have to. José is like that.
"Some managers will speak with you when you’re playing but they won’t speak with you when you’re not.
"I just try to keep myself going the same no matter what kind of behaviour, because as a professional, you have to be ready for every situation and whether he does or doesn’t speak to you, you should never let that in any way affect the level of your performance."
He sounded like a man who was not happy plying his trade under Mourinho.
He was after-all Chelsea's Player of the Year last season and needs to be playing week-in, week-out if he wants to seal a place in Vicente del Bosque's Spain squad.
Mata was left out of the Spain squad, along with Chelsea teammate Fernando Torres, at the end of August - due to Mourinho's decision to pick the likes of Willian and Eden Hazard ahead of him.
It was also rumoured that Mourinho offered Mata to Manchester United in hope that he could entice summer target Wayne Rooney to the Bridge.
Mata, who cost the Blues £24m in August 2011, seems to have lost his creative spark and ability to score crucial goals under Mourinho.
The Spaniard, who scored 20 goals in all competitions for Chelsea last season, has netted just once so far this season.
Something isn't right between Mourinho and Mata, which is why it might be best - for all parties concerned - if the Spaniard leaves for pastures new during the January transfer window.
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