The Reds and our hosts in Saturday evening's 0-0 draw will meet again at Old Trafford, on a date to be confirmed, but in the meantime both teams will be in the hat.
Two Premier League sides were knocked out earlier in the day - Aston Villa and Brighton & Hove Albion - as their conquerors, Fulham and Sheffield Wednesday, joined Birmingham City, Brentford, Burnley, Hull City, Millwall, Norwich City, Oxford United and Southampton in going through.
The other early-evening encounters were won by Bournemouth, Leicester City, Portsmouth and our visitors in Tuesday's Carabao Cup semi-final first leg, Manchester City, who beat League Two side Port Vale 4-1 in their home tie at the Etihad Stadium.