"We have asked Carlos to get in touch today but have not yet heard from him," a club statement read.
Tevez missed practice Wednesday. City's last game was Sunday's 3-2 victory over Queens Park Rangers and players were given Monday and Tuesday off. The English Premier League leaders don't play this weekend because national teams are in action.
Tevez was omitted from the Argentina squad for its World Cup qualifier against Bolivia. He was expected at training with the other players that were not with their national teams.
The 27-year-old striker claims he attempted to contact manager Roberto Mancini via phone calls and texts messages before leaving England.
"He was told it was Roberto Mancini's decision as to whether or not he could go and he left numerous voice messages and texts on Mancini's phone," his spokesman said.
"He didn't receive a response at all. He then flew to Argentina and tried to speak to Mancini again on Tuesday, leaving messages and texts. We've had no response."
Tevez has been in Mancini's doghouse for the better part of the last 18 months. He submitted a transfer request last season, claiming he wanted be closer to his wife and children, who remained in Argentina.
He hasn't appeared for City since he infamously refused to warm up during a Champions League game in September. He publicly fell out with Mancini (again) and was fined and suspended by the club. The manager offered him a way back into the team, but this latest transgression may guarantee the striker's exit from the club.
Photo via Flickr/Catatan Bola Photo Gallery
