The announcement was made on the Stade Rennes website.
Erding has been squeezed out at the Parc des Princes this season after the ambitious Qatari-backed side, who lead the Ligue 1 standings, brought in the likes of Javier Pastore and Kevin Gameiro.
The Ligue 1 January transfer window has been relatively quiet but is beginning to kick into action with club sources saying champions Lille are close to signing Palermo's Argentine defender Mauro Cetto.
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