The Spaniard arrived on loan from Flamengo last season but the Gunners have the option to make the deal a permanent one come the summer.
Mari, who signed for Manchester City earlier in his career but failed to make a single appearance for the current Premier League champions, was deemed not ready to feature in the goalless draw with Burnley prior to the winter break.
Arsenal’s first team squad spent six days in Dubai on a warm weather training camp over the course of the last week and the club confirmed the first signing of the Arteta era is in contention to feature when the north London club’s European campaign resumes.
Fellow January loan recruit Cedric Soares, however, is not due to return to full first team training for another fortnight as he continues his recovery from a foot injury.
Kieran Tierney, too, is not scheduled to make a return to full training until the end of…