Osvaldo left Inter Milan last week to join Boca on-loan.
The Daily Echo reports Osvaldo has been named by a variety of Argentine news sources as the ringleader of a get-together organised with four teammates and two female guests.
It's alleged Boca manager Rodolfo Arruabarrena is demanding Osvaldo, along with Juan Manuel Martinez, be separated from the rest of the squad.
The manager is said to have argued with club president Daniel Angelici over Osvaldo's conduct, with talk of sending him back to Saints.
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