Cardiff City manager Dave Jones has revealed striker Jay Bothroyd is battling a hereditary calf problem.
The 28-year-old Bluebirds forward returned to action against Ipswich at the weekend having missed the previous two matches because of the injury.
Boss Jones says the club are trying to nurse Bothroyd through the problem, which affects both legs, as Cardiff look to push for promotion from the Championship this season.
He told the South Wales Echo: "Jay has some sort of hereditary problem in the calf area.
"We are trying to nurse him through because he has tight calves. It's something we are looking into.
"Jay was fit to start against Ipswich Town. But after missing the previous two matches it was always going to be difficult to get him up to speed in four days."
Meanwhile, City defender Darcy Blake is targeting a call-up to the Wales squad following the appointment of Brian Flynn as caretaker manager.
Blake played under Flynn for Wales' Under 21 side and believes his recent performances for his club could earn him a call-up to the senior squad for next month's Euro 2012 qualifiers against Bulgaria and Switzerland.
"Brian Flynn is in charge for two games and it would be fantastic if he was given the job long term," Blake remarked.
"He has done a good job for the U21 team and hopefully I am in with a good shout of being selected for the senior squad again."