Wales assistant coach Rob Howley admitted some players' availability is in question ahead of their Six Nations clash with France.
The Welsh will host the round three fixture at the Millennium Stadium, but are troubled with injury concerns as lock Luke Charteris and centre Jonathan Davies were both unable to report for club duty this past weekend with a knee and groin injury respectively.
Davies is expected to resume training, but Wales' centre options seem to be wearing thin with Cory Allen injuring his ankle in Cardiff Blues' encounter with Leinster, while Tyler Morgan is already on the injury list.
Fly-half Rhys Priestland got the go ahead to resume training after receiving a knock during Bath's match against Wasps.
Howley, who is awaiting confirmation on Charteris' availability later this week, voiced his frustration with the his side's injury situation.
"We are disappointed to lose Cory," Howley told the Six Nations website.
"He is due to have x-rays and scans to determine the extent of the injury.
"We are hopeful it won't be as bad as first thought.
"It's unfortunately the nature of the weekend between Six Nations games.
"It's the same for every other country.
"It's a difficult time; you are hoping and praying that the players released don't get injuries.
"Unfortunately with Cory we have come up a little bit short."