Thiago Silva, Pato and Robinho are expected to start training with Milan next week after Brazil's Copa America exit.
The Selecao crashed out of the competition last night after being defeated in the quarter-finals by Paraguay on penalties.
The Brazilian trio were set to start pre-season at Milanello at the beginning of August, but they are set to join the Rossoneri squad on July 25.
Meanwhile, Antonio Cassano and Zlatan Ibrahimovic have reported for training this morning after being given a few extra days' holiday.
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