Wrexham have been dealt a double injury blow as Kieffer Moore has sustained a “small” tendon split, while Liberato Cacace has suffered a setback in his recovery from a hamstring injury.
Striker Moore came off the bench in the Red Dragons’ 4-2 FA Cup fifth-round loss to Chelsea on Friday, but was then withdrawn late on.
The 33-year-old, who is the club’s top scorer this season with 13 goals, was omitted from the squad to face Hull City in the Championship on Tuesday night.
Moore’s injury could potentially leave Wales boss Craig Bellamy with a concern as they prepare for their World Cup play-off semi-final contest against Bosnia and Herzegovina at Cardiff City Stadium on 26 March.
If Wales win that, they will host the final against either Italy or Northern Ireland will five days later.
Left wing-back Cacace has been plagued by injuries since moving to north Wales from Italian side Empoli last summer.
The New Zealand international, 25, has been restricted to just 11 Championship appearances this season.