West Ham are facing a defensive crisis after Reece Oxford was ruled out for four weeks after a freak training ground injury.
The 17-year-old, who has not featured in the Premier League this season, has suffered an ankle ligament injury in his left leg after falling awkwardly during a training session earlier this week.
The injury will sideline Oxford, who is in an ankle brace and using crutches, for around a month.
With Winston Reid already out with hamstring injury, Oxford has added to Slaven Bilic's woes leaving him short of central defensive options.