Arsenal fans are adamant defender Shkodran Mustafi has taken a parting shot at Alexis Sanchez following the Chilean's move to Manchester United.
The 29-year-old was unveiled as a Red Devils player on Monday night. The transfer was a straight swap for Henrikh Mkhitaryan who moved in the opposite direction, joining Arsenal.
In the weeks leading up to the blockbuster move, there were reports that Sanchez was causing a rift in the Arsenal training camp.
These rumours have only been further escalated by Mustafi's tweet.
The German defender posted a picture of himself from training with the caption: "Come on Gunners, all together now!"
Mustafi's snap comes from the same training session Mkhitaryan took part in, and Arsenal fans viewed his message as a parting shot.