Carlos Tevez has returned to Manchester City but could face an immediate fine for saying that boss Roberto Mancini treated him "like a dog".
The striker travelled back to Manchester from Argentina yesterday after disappearing from the club in November.
Tevez is reportedly £9.8m down through lost wages and fines and could now face a further sanction of £400,000 for comments made during a television interview in Argentina.
City will review the interview later this week before deciding on what action to take.
Tevez met with club medical staff yesterday, but he will reportedly have to apologise to the club before being considered for action.