The former Arsenal captain played for Barca B in their friendly win over Indonesia U19 this week.
The Belgium international has recovered from a muscle injury that he sustained during the World Cup and that has until now prevented Luis Enrique from including him in a match-day squad.
Vermaelen played 63 minutes of Barcelona B's friendly against Indonesia's under-19s on Wednesday and scored the opening goal in a 6-0 win.
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