There's four fourth round replays taking place.
Liverpool's under-23 manager Neil Critchley will take charge of tonight's FA Cup replay against Shrewsbury.
Jurgen Klopp has given himself and his first team a night off as part of the winter break - so there will be a youthful look to the team at Anfield later.
Critchley - who was also in the dugout for Liverpool's League Cup defeat to Aston Villa in December - says it's a great opportunity:
Wayne Rooney will face his former club Manchester United in the last-16, if Derby can beat League Two side Northampton.
Following a nil-nil draw at St James' Park in the first game, Premier League Newcastle travel to League One Oxford United, while Cardiff host Reading.
After their fans had to sit in the away end of their own stadium in their initial nil-nil draw, Birmingham entertain their tenants, Coventry, at St. Andrew's.
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