The 27-year old left-back is out of contract after leaving Bordeaux at the end of last season and according to L'Equipe will join the Eagles once he passes a medical.
Marange, who has had previous loan spells with Le Havre and Nancy, will bring experience to Selhurst Park and provide competition for the likes of Jonathan Parr, Dean Moxey and Matt Parsons at left-back.
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