Rio de Janeiro: Neymar has already begun training alone in his home city of Santos despite not being required to join his new Barcelona teammates until July 29.
The 21-year-old Brazil striker is scheduled to fly to Barcelona Thursday where he will have four days to settle before starting his pre-season campaign with the Catalan club, reports Xinhua.
He posted a photo on Instagram in which he showed obvious physical exertion during an abdominal workout Wednesday.
Barcelona have already tailored a programme for the forward designed to add five kilograms to his 64.5kg frame.
Neymar is not expected to play in Barcelona`s friendly against Poland`s Lachia Gdansk July 30, which was rescheduled after the announcement of coach Tito Vilanova`s resignation due to illness.
His first match for the reigning Spanish champions is likely to be against former club Santos in a friendly at the Camp Nou Aug 2.
The fixture is part of the agreement that brought Neymar to the club in June for 57 million euros.