Newcastle United midfielder Charles N'Zogbia will undergo tests on Thursday to assess the full extent of his knee injury.
The 20-year-old Frenchman was stretchered off just before half-time during Wednesday night's 1-0 Premiership defeat at Chelsea, and manager Glenn Roeder later revealed fears that he had damaged his medial ligament.
N'Zogbia returned to Tyneside with the rest of the squad last night and was expected at the training ground to give the club's medics a chance to examine the injury.
The left-sided player could be missing for several weeks and with the holiday programme fast approaching Roeder would then have 14 players out injured.
Roeder hopes to have Kieron Dyer and Scott Parker back from thigh and back problems respectively for Saturday's hugely important Premiership clash with Watford at St James' Park.
Emre too could return sooner rather than later from an ankle injury.
But with full-back Celestine Babayaro facing a one-match ban after reaching five bookings for the season at Stamford Bridge, the January transfer window cannot come soon enough for the Magpies.
Newcastle's injury list• SHOLA AMEOBI: Currently recovering from surgery to repair a long-standing hip problem and has set himself the target of returning for the start of next season.
• OLIVIER BERNARD: Arrived from Rangers in September well short of match fitness and has since suffered a hip injury which has prevented him from making a second senior debut for the club.
• TITUS BRAMBLE: Hoping to be fit for the new year after an alarming reaction to a blow to the calf in Frankfurt last month which resulted in an extended stay in hospital.
• STEPHEN CARR: Still fighting his way back from a foot problem which has kept him out of the club's last seven games with no imminent return in sight.
• DAMIEN DUFF: Back in light training following surgery to repair a damaged knee cartilage, but could be out for several weeks yet.
• KIERON DYER: One of those who could return at the weekend, Dyer has missed the last four games with a badly gashed thigh after coming back from hamstring and eye problems.
• EMRE: Picked up a nasty-looking ankle injury in the 3-1 win at Blackburn last weekend, but has an outside chance of making the Watford game.
• STEVE HARPER: In rehabilitation after surgery to repair a hernia last month, but should be available within a matter of weeks.
• TIM KRUL: Back in training following a knee operation, but the goalkeeping crisis which handed him a senior debut in Palermo last month has abated.
• CRAIG MOORE: Out with a hamstring problem for the last six games, Moore has a history of similar injuries which have cost him lengthy spells on the sidelines, and no date has been put on his return.
• CHARLES N'ZOGBIA: The club is still assessing the extent of suspected knee ligament damage sustained in last night's 1-0 defeat at Chelsea.
• MICHAEL OWEN: Owen has targeted a return late this season after separate operations to repair cartilage damage and the ruptured anterior cruciate ligament he suffered during England's World Cup finals campaign.
• SCOTT PARKER Strained a back muscle during the 1-0 Premiership win over Portsmouth on November 26, but could return at the weekend.
• NOLBERTO SOLANO Picked up a hamstring injury at Blackburn and could be out for two to three weeks.