Milan said on their website on Thursday afternoon that Balotelli had bid farewell to his team-mates before leaving training.
The statement on the club's website read: "Mario Balotelli left Milanello's sporting centre at 13.30 (local time), after saying goodbye to his team-mates. "Before leaving the premises, the striker has said goodbye to members of Milan's press office."
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Cloudy, cold, wet start to the new week, then continuing mixed and breezy
It happened after yesterday's football game, which saw Barrow win 2-0 against York City.
Blustery showers and sunny spells on Sunday. Wet for all areas by Monday afternoon. Mixed forecast into the new week