Manchester United's social media slips have let slip an ugly post against manager Jose Mourinho the net.
The Times reports the club were updating their live blog during the emphatic 2-2 draw with Southampton when it contained a explicit tweet declaring "Mourinho can f*** off out of my club".
The tweet itself was praising striker Marcus Rashford's performance after the England striker assisted two to salvage a point.
But it was the supporter's Twitter name that left the club red-faced.
The Twitter user could have seen his tweet on the live blog and then changed the name of his handle to reflect his views.