West Ham signed Jack Wilshere in the summer window but his lack of game time has been frustrating.
The 26-year-old has only played five matches and is set to miss a number of matches now with an ankle injury.
And according to The Sun, Wilshere could actually miss the rest of the season if he needs surgery.
With Carlos Sanchez also out, West Ham need a new central midfielder in January.
Here are three midfielders that West Ham could target in the January transfer window.
Manuel Pellegrini has targeted fellow Chilean Gary Medel, according to Sky Sports News.
The 31-year-old can provide some tenacity in central midfield, as well as providing cover at centre-back.
The Chile international, who has vast experience, is currently at Besiktas and previously played Premier League football with Cardiff City.
The only concern here is his age; do West Ham really need another over-30 in their side?
West Ham are leading the race for Manchester United midfielder Andreas Pereira, according to Brazilian media outlet Globo Esporte.
The 22-year-old was used sparingly by Jose Mourinho and could be available for loan.
And with his contract expiring at the end of the season, it could be a case of a loan with a view to a permanent summer move for the Brazil international.
However, Pereira might be handed a Manchester United reprieve after Ole Gunnar Solskjaer used him as a substitute in his first game in charge.
Chelsea midfielder Ruben Loftus-Cheek has failed to nail down a regular starting spot for the Blues this season.
As a result, West Ham should be seeking a January loan for the 22-year-old.
The England international is a quick, strong, ball-carrying midfielder who can do the defensive and attacking duties required of his role.
Loftus-Cheek would be an ideal short-term signing for West Ham, but it all depends on whether Chelsea plan to use him as a squad player.