The 26-year-old has featured in just one game for the Magpies in the league this season, against Everton at Goodison Park in September, but Pardew says he may call upon the Frenchman in upcoming fixtures.
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"Sylvain's not out of the equation – at any time he could be called upon," Pardew told the Jarrow and Hepburn Gazette.
"I have no fears or bones about putting him in. He is trying to earn his place.
"Sammy [Ameobi] and Fergie [Shane Ferguson] have done well, and they're both in his position. Gabby [Obertan] is also been doing well.
"With United facing so many games at home and abroad, no player has been frozen out."
The midfielder moved to Tyneside from Rennes in 2011 but spent most of last season on the sidelines through injury and has only managed 17 appearances since his arrival.