The last of the four FA Cup quarter-final ties. It's been an exciting weekend for the old Cup. We started it at Middlesbrough where Manchester City proved too strong, then saw Lincoln City's fairytale run come to an end at Arsenal before Tottenham demolished Millwall.
In terms of sheer competition this fixture tonight is certainly way ahead of the others. It's a match-up between two of the world's best managers who want as much success as possible for their sides.
Stay with me for live coverage of the match, team news and plenty more.
Chelsea host Manchester United at Stamford Bridge as both sides clash for a place in the FA Cup semi-finals at Wembley.