Newcastle striker Callum Wilson says he does not know how long he will be out of action with a calf injury.
The club's top scorer was injured in the first half of the 1-1 draw against Manchester United on 27 December.
Wilson said he will see a specialist this week.
Boss Eddie Howe said after the Premier League game that Wilson could be out for "weeks, maybe months" and that was likely to have a bearing on their dealings in the transfer market.
Wilson told the BBC Footballer's Football Podcast: "It's a strange one, I don't know how long I will be out for.