The fourth round of the FA cup was drawn today, and West Ham's opponents are either Chelsea or Norwich. The two teams drew 0 - 0 at Carrow Road, and the replay will take place on Wednesday January 16th, with the kick off at 7.45pm.
The match (which is away at either Carrow Road or Stamford Bridge) will take place on the weekend of January 26th/27th.
The main fixture of interest is a copy of last years final, with Arsenal drawn against Liverpool at Anfield, with other matches being Leeds-beaters Cardiff against Southend or Tranmere, and Middlesbrough or Wimbledon entertaining lucky Manchester United.