Sergio Aguero completed his move to Barcelona at the end of May from Man City.
However, the Argentine then went on international duty with Copa America. His country won the Copa America after beating Brazil in the final and then he had three weeks holiday before returning to Barcelona. He has now been for his first day of training which saw him do gym work before going on the training ground. Take a look at footage from his first day in the video above!
Barca's first competitive game of the new season is at home to Real Sociedad on 15th August.