Luton midfielder Izzy Brown is a major doubt to face his old club when Leeds visit Kenilworth Road in the Sky Bet Championship on Saturday.
The Chelsea loanee, who spent last season at Elland Road, has made five assists in his last seven appearances for the Hatters.
Brown missed the 3-0 defeat by Reading before the international break with a hamstring injury and is struggling to recover in time.
Manager Graeme Jones also has an injury concern over forward Danny Hylton as he looks to halt a four-match losing run.
Leeds captain Liam Cooper could be included in Marcelo Bielsa’s plans despite missing out for Scotland during the international break due to a groin problem.
Stuart Dallas has been confirmed fit after a knock ruled him out of Northern Ireland’s defeat to Germany on Tuesday.
Adam Forshaw is unavailable after missing the last seven matches due to a hip problem and fellow midfielder Jamie Shackleton (hamstring) is also still out.
On-loan Arsenal striker Eddie Nketiah (lower abdomen) is expected to return to full training next week.