Disciplinary proceedings have been opened against Darron Gibson.
Sunderland released a short statement on Monday afternoon on the subject of a video that went viral at the weekend.
The secretly filmed footage showed Gibson criticising his teammates for both a lack of quality and pride in the jersey.
The clip, which was recorded hours after the Black Cats suffered a 5-0 preseason defeat to Celtic, showed the former Manchester United and Everton midfielder engaging in a heated exchange on a night out and the club has since responded to the video.
“Darren (sic) Gibson has not conducted himself in a manner befitting Sunderland Football Club.
“As a consequence, we will initiate our internal disciplinary process to deal with the matter.
“Darron has apologised this morning.”
Former Sunderland fan favourite Mickey Gray actually put his backing behind Gibson for his statements as he believed it was high time that the shortcomings of the recently relegated club were brought to the fore.
Over the course of five tweets, Gray explained how he felt the Republic of Ireland international did nothing wrong, particularly given the fact that Gibson believed the conversation was a private one with supporters.
At last we have a lad at our club who is honest about what a mess it is. Players don't want to be there so get rid of them. Well said Gibbo
— michael gray (@mickygray33) July 30, 2017
And for those lads who videoed him.. what a set of k–bs…. he wasn't on duty so leave him be. No wonder players don't connect anymore…
— michael gray (@mickygray33) July 30, 2017
Get over the result against Celtic… it's a pre season game. What matters is Friday so let's get behind Grayson and show your support…..
— michael gray (@mickygray33) July 30, 2017
As you always do… this isn't going to get better overnight.. the place is a shambles right now but your support goes a long way..
— michael gray (@mickygray33) July 30, 2017
Well done Gibbo for speaking to those idiots who should never have been videoing you…
— michael gray (@mickygray33) July 30, 2017
