Isaac Hayden could face an FA charge after appearing to take a savage dig at match referee David Coote following Newcastle United's defeat to Chelsea.
The Magpies had two big decisions go against their way at Stamford Bridge as Kai Havertz scored a late winner to secure three points.
The German was lucky to avoid a red card after striking Dan Burn with his elbow in the first half.
Eddie Howe also felt his side should have been awarded a penalty when Trevoh Chalobah clashed with Jacob Murphy inside the box.
The visitors were on course for a hard-earned point until Havertz popped up in the 89th minute.
Advert
Hayden, who's not part of Newcastle's 25-man league squad due to injury, aimed a dig at the officiating on Sunday as he shared a brutal post on Twitter.
"Some performance from the boys against 12 men today. Proud to be associated with the club is an understatement," he tweeted.
The defeat at Chelsea snaps their unbeaten league streak having not lost a league match since December 19.
Advert
Speaking after the 1-0 loss, Howe bemoaned the officiating and slammed VAR.
"It could have been a red but not going to shout from rooftops, but the penalty with the use of VAR I cannot understand that has not been given or the ref has not been asked to go to the monitor and review his decision," he explained.
"That makes a mockery of VAR. We are still in a relegation battle. I’m under no illusion we have to respond and we are looking forward to some big games ahead.
"Overall it was a very good defensive performance, very strong tactically. Players were resilient to not give away too many chances and I can't speak highly enough about our defensive display.
Advert
"Our pressing was good in the first half. We faded a bit in the second half, which is understandable, with the players we have out. We got too deep and they punished us. On the ball we could have been better but what has brought us these good results of late was our defensive endeavour and that was present again today."
Topics: Lionel Messi, Argentina, Football