Celtic have blasted Boli Bolingoli for being 'irresponsible' and 'stupid' for breaking quarantine rules when travelling back from Spain.
The defender apologised for his own actions and it has forced the Scottish Government to consider suspending football in Scotland with Bolingoli the second major breach.
It comes after eight Aberdeen players attended a pub in the city centre with two of them testing positive for COVID-19.
And now Bolingoli's behaviour have led to Celtic warning him he faces major disciplinary problems as they revealed they have apologised to clubs across Scotland for his actions.
The Hoops didn't hold back in their statement following the news on Bolingoli, who has now been left fighting to save his career with the champions.
The statement read: "Celtic Football Club unreservedly condemns and apologises for the behaviour of the player Boli Bolingoli in travelling to Spain without informing the club and in failing to observe quarantine restrictions.
"It is difficult to imagine a more irresponsible action in current circumstances and we find it beyond explanation. The Club will take immediate action through our own disciplinary procedures.
"Celtic are in touch with every SPFL club today, and with all relevant authorities, to apologise for the fact that one of our employees has created so much additional difficulty through his actions.
"All of our playing and backroom staff have been tested twice for Covid-19 since this incident and all, including the player in question, have tested negative. While this comes as a relief to all concerned, it in no way diminishes the seriousness or stupidity of the player’s actions.
"Since the Covid -19 crisis began, we have had a safe and healthy squad of players, recording not one positive test. As a club, we have worked tirelessly to ensure a sustained, safe environment for all.
"We have led the way in working with the football authorities and Scottish Government to establish the most rigorous, effective protocols and working practices, which ultimately led to the resumption of football. We could have done no more in this area.
"It is a matter of the deepest regret to us that the behaviour of one individual has jeopardised that reputation and reflected discredit on football more generally."
