Newcastle winger Harvey Barnes has had a scan on a "substantial" foot injury and could be out for "months rather than weeks", says boss Eddie Howe.
Barnes, signed from Leicester in July for £38m, has had a scan and is waiting to see if surgery is required.
"It's an injury to a part of the foot just below the toe. I think it's quite a substantial injury," Howe said.
"I won't go too technical because I'm not qualified to do so but yes it's a very unusual injury."
Barnes, who has one England cap, has made seven appearances for Newcastle, scoring once.