Brighton and Hove Albion are facing "a few weeks" without the services of young Tariq Lamptey.
The star wing-back suffered a setback in his recovery from a hamstring problem.
He had already been ruled out of the third-round FA Cup tie at Newport County on Sunday night.
Brighton manager Graham Potter revealed after the game that Lamptey's absence looks set to extend further into a busy January schedule.
"On the back end of his rehab he just felt the hamstring," he told theargus.co.uk
"He will probably have to take a couple of steps back, which is disappointing for us and obviously for him.
"It means he is going to be a few more weeks yet. That’s disappointing."
Lamptey has not featured since going off injured in a Premier League fixture at Fulham FC last month.
The 20-year-old has since missed four matches.
- Performance of Ghanaian players abroad wrap-up: Nuamah, Mensah, Abagna, Tekpetey on target
- Bernard Tekpetey scores twice in Ludogorets' 3-0 win over Hebar
- Osman Bukari shines with assist in Red Star Belgrade's thrilling league victory
- Arsenal to part ways with Thomas Partey over injury problems
- Watch Fatawu Issahaku’s assist in Leicester City’s 2-1 win over West Brom
- Read all related articles