Chelsea striker Tammy Abraham scored a hat-trick as the Blues beat Luton 3-1 at Stamford Bridge on Sunday to progress to the fifth round of the FA Cup.

Chelsea boss Frank Lampard was largely happy with Chelsea’s performance against Luton but wasn’t having we got complacent when leading 2-0.

He said: “We got it right in pretty much every sense other than two sloppy moments, one for their goal, one to give them a chance, but other than that everything was nailed on.

“It was a general team moment of complacency at how comfortable we were at 2-0, which is not good enough.

“We got back from that quickly, we dominated the game, all that made it was slightly nervous that we didn’t have the two-goal lead that makes it very comfortable.

“Once we got that back again, which we should have got a lot earlier, then the game was comfortable.”