Trio back in France squad
Racing 92 duo Chat, a hooker, and loosehead prop Ben Arous return to the fold after injuries in the European Champions Cup against Munster last month saw them forced out of France's first two tournament matches.
Their replacements, Toulouse hooker Christopher Tolofua and Toulon prop Xavier Chiocci drop out.
Lock Jedrasiak replaces his Clermont teammate Arthur Iturria in the 24-man group training in Nice, who will be joined by eight more players following this weekend's Top 14 programme.
Back-row forward Loann Goujon had already pulled out of the squad after being ruled out for a month earlier with a fractured bone in his sinuses.
France travel to Ireland next on February 25 before a trip to Italy and the visit of Wales to round off the Six Nations.
Having opened with a 16-19 defeat to England at Twickenham they beat Scotland 22-16 at the Stade de France on Sunday and currently sit fourth in the table.
France squad:
Forwards: Uini Atonio (La Rochelle), Cyril Baille (Toulouse), Eddy Ben Arous (Racing 92), Camille Chat (Racing 92), Guilhem Guirado (Toulon/capt), Rabah Slimani (Stade Francais), Paul Jedrasiak (Clermont), Yoann Maestri (Toulouse), Julien Le Devedec (Brive), Sebastien Vahaamahina (Clermont), Louis Picamoles (Northampton/ENG), Kevin Gourdon (La Rochelle), Damien Chouly (Clermont), Bernard Le Roux (Racing 92)
Backs: Maxime Machenaud (Racing 92), Baptiste Serin (Bordeaux-Begles), Camille Lopez (Clermont), Remi Lamerat (Clermont), Gael Fickou (Toulouse), Yoann Huget (Toulouse), Djibril Camara (Stade Français), Noa Nakaitaci (Clermont), Virimi Vakatawa (France Sevens), Scott Spedding (Clermont).
Agence France-Presse
