In the end I think is best for both parts that he leaves but I can definitely see Mourinho giving him a shot this weekend if Lingard isn't fit and then humiliate him once again when he fails to perform. It wouldn't be the first time Mourinho sacrifices an early game to publicly prove his point (if the board for some reason doesn't want to sell Mata for example).
Unless Mourinho changes his philosophy Mata doesn't fit with him at all. Mata needs to be free to create and he's known for drifting when trying to defend and that is a no-no under Mourinho's system. If only Man United hadn't sold Di Maria last year, he's the perfect winger in a Mourinho system (which is where Mata would play at United like he did under Mourinho at Chelsea).
Mourinho doesn't mind showboating and freedom IF the same player shows the same desire to defend. Ozil was free to do everything he wanted at Real because he also helped to defend. Kevin De Bruyne on the other hand...
I mean does anyone know what the comments were? If they were death threats, racism or something seriously bad that should be handed to the police and the person banned from the stadium. If it is just someone blowing off steam, some vulgar language and upset then this letter is downright offensive and the club should be ashamed.
Apparently he had a go at the board/ owner for a few months. Nothing crazy like threats etc.
Charlton have put out a statement confirming they've written to the fan. Remarkable times.
Individual has constructive meeting with club regarding abusive behaviour
The club can confirm that they sent a letter to one supporter relating to their continued inappropriate behaviour towards members of staff on Charlton’s official social media accounts and foul and abusive language captured on stadium cameras.
No other letters have been sent to supporters. A letter was sent to this individual as it was relating to a particular set of circumstances.