Players union chief Gordon Taylor has expressed his disappointment and concern at Carlos Tevez's latest indiscretion after the striker failed to report to training with Manchester City on Wednesday.
Tevez - despite apparently being told by City that he was not permitted to - flew out to his native Argentina on Monday night to see his family. Tuesday was a scheduled day off for the 27-year-old, but he was due at City's Carrington training ground on Wednesday and did not show up.
"To say the least, I am very disappointed and extremely concerned now," Taylor told Sky Sports News.
The news comes just a day after it emerged that Tevez would not be appealing against the club's ruling that he was guilty of misconduct in the Champions League defeat to Bayern Munich on September 27.
City last month fined Tevez four weeks' wages and suspended him for two weeks - deemed to have already been served - after a disciplinary panel found the former Manchester United man guilty of five breaches of contract relating to his behaviour on the bench during the 2-0 loss at the Allianz Arena.
The Professional Footballers' Association became involved, making an intervention that saw the fine cut to two weeks' wages and, having backed Tevez on that occasion, PFA chief executive Taylor has been left dismayed by the fresh turn of events.
He added: "To go out to Argentina when - as I have been informed - he was clearly told not to because they (City) needed to work on his fitness, and to blatantly ignore that instruction starts to affect any chance of any reconciliation now.
"The whole relationship between clubs and players is one where there has to be clear understanding of what is to be expected and what is not expected. From that point of view, he is making it virtually impossible to have a reconciliation and leaving himself very vulnerable to strong action by the club.
"If he is determined to leave the club, which may well be apparent, then his money value is being diminished by his actions and can affect another club's interest. As such, he could be held responsible for that, so it is getting to be a situation that I am not at all happy about.
"Neither are the club of course, and it is one that we will have to deal with."