The Argentina forward is in Buenos Aires as he continues his rehabilitation from the injury which has kept him out for more than a month.
Club doctor Richard Pruna and director of sport Andoni Zubizarreta have travelled to Argentina to check on his recovery.
Pruna performed a physical examination and an ultrasound on Wednesday which showed Messi was "making good progress".
The injury is set to keep Messi out for between six and eight weeks in total, meaning he is in line for a January return.
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