Real Madrid striker Benzema was put under formal judicial investigation earlier on Thursday in connection with an alleged attempt to blackmail Olympique Lyonnais forward Valbuena with the use of a sex video.
France coach Didier Deschamps told a news conference he would not answer "questions not related to football".
He simply said Valbuena, who took part in Lyon's 2-0 home defeat by Zenit St Petersburg in the Champions League on Wednesday, was not in an emotional state to play.
Benzema, on the injured list at Real recently, has been forbidden by a prosecutor to be in contact with the people linked to the investigation.
With two of his key players missing, Deschamps recalled Ben Arfa, who has been shining at Nice, scoring seven goals in 12 matches in Ligue 1.
Midfielder Ben Arfa won the last of his 13 caps at Euro 2012.
He had a difficult relationship with Deschamps when the former France captain, who led Les Bleus to their World Cup title in 1998, was his coach at Marseille, refusing to train as he forced a move to Newcastle United.
While all French players have signed a charter pledging good behaviour off the pitch, Deschamps said "sporting qualities" were his priority when he picked his squad.
Euro 2016 hosts France take on Germany at the Stade de France on Nov. 13 and travel to London to face England four days later.
Deschamps also handed Bayern Munich forward Kingsley Coman his first call-up.
(Editing by Tony Jimenez)
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