Bruno Manga's knee injury is not as serious as first thought, but the Cardiff City defender is still expected to miss the start of the season.
A scan on Monday showed no significant ligament damage to the injury picked up during Cardiff's friendly win over Sparta Rotterdam on Friday.
Manager Russell Slade had already lost centre back Ben Turner for the start of the season because of an ankle injury.
Manga, 27, was signed for more than £5m in 2014.
The Gabon international made an immediate impact for the Bluebirds, and was voted their player of the season.