France winger Franck Ribery has been struggling this summer with a recurring back injury, putting his World Cup hopes in jeopardy, French newspaper L'Equipe reported on Sunday.
Ribery was available on the bench for France's friendly on Sunday against Paraguay, but French coach Didier Deschamps said he hopes his top attacker can return for their next warm-up match against Jamaica next Sunday in Lille.
"Backache, it means everything and nothing," Deschamps said before the Paraguay match. "I'm not part of the medical staff, but everything is being done for a return in the best conditions.
"The objective is to make [Ribery] available and good for the last preparation match against Jamaica next Sunday."
Some reports on French television said Ribery would miss the World Cup, but L'Equipe said no decision has been made.
Deschamps must decide whether to include the Bayern Munich man in his final 23-man squad by Monday night.
France open the World Cup on June 15 against Honduras, then face Switzerland and Ecuador in Group E.