Chelsea discover FA Cup fourth round and possible fifth round opponents

Should we overcome the Hatters at Stamford Bridge, we will travel to either Barnsley or Norwich in the fifth round, with that draw taking place a few minutes after the fourth round one tonight. 

We last played Luton in this competition in the semi-final in 1994, where two Gavin Peacock goals sent us through to our first FA Cup final in 24 years. 

Luton, who beat Reading in the third round, are currently 14th in the Championship. Barnsley and Norwich are also second-tier sides.