Ex-Manchester City and Manchester United star Carlos Tevez’s international career appears to be over after he was left out of the Argentina squad for the World Cup in Brazil next month.Julio Grondona, the president of the Argentinian FA, revealed the striker was left out because of issues surrounding the squad – further fuelling the fire of a rift with Lionel Messi.The 30-year-old has scored 19 Serie A goals for Juventus this season prompting supporters to hold marches in Buenos Aires to call for his international recall.“It’s a group issue, one to do with the players,” Grondona told reporters.“There are many players battling for one position in the team. In these situations, it is not positive that they are all there, as at the end you don’t know who is going to play.“That is when the problems start, as already happened on previous occasions.”Tevez is no stranger to controversy with arguably his most high profile spat coming when he refused to warm up for Manchester City in a Champions League games when instructed by boss Roberto Mancini.Tevez was banished before eventually being re-integrated into the squad after claiming he was treated like a dog.