The striker scored 19 Serie A goals for Juventus this season but was overlooked by coach Alejandro Sabella.
“It’s a group issue, one to do with the players,” explained Afa President Grondona.
“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.”
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