NO VAR
Whether you like it or not, VAR has become a central part of modern football and it's rare to have a United game without it now.
However, that will be the case on Thursday as, like in the previous two rounds, the final decision will rest with the on-field referee - John Brooks - and his officiating team. Brooks has overseen one Reds game so far this season, taking the whistle for the recent 4-0 victory over Everton at Old Trafford.
If we do successfully make it to the semi-finals, played over two legs, VAR will come back into play again.
STRAIGHT TO PENALTIES
If Thursday's quarter-final ends level after 90 minutes, we will go straight to a penalty shootout.
There will be no extra-time played at the Tottenham Hotspur Stadium - since 2018/19, extra-time has only been played during the final.
The last time we faced Spurs in a penalty shoot-out was during the 2008/09 League Cup final. United lifted the trophy, beating Spurs 4-1 on penalties after a goalless 120 minutes.
A 21-year-old Jonny Evans started that game and picked up his first honour of an illustrious career and he could also be available on Thursday