The last eight will be whittled down further this weekend.
The first match is in Wales as Swansea City take on Tottenham Hotspur, who are without the injured Harry Kane. Later on Manchester United face Brighton. Tomorrow the lowest ranked side still left in the competition, Wigan, are home to Southampton. Finally Leicester City will up against Chelsea.
Swansea City v Tottenham Hotspur is on BT Sport 1 at 11.45 (kick-off at 12.15).
Manchester United v Brighton & Hove Albion is on BT Sport 1 at 19.30 (kick-off at 19.45).
Wigan Athletic v Southampton is on BBC One at 13.15 (kick-off at 13.30).
Leicester City v Chelsea is on BBC One at 16.05 (kick-off at 16.30).