Much of the pre-match talk centred around how United were going to cope with Liverpool's in-form front three of Sadio Mane, Roberto Firmino and the league's joint-top scorer Mohamed Salah.
He said: "Right now, I'm probably not learning the most on the pitch".
However, the Reds failed to take anything from the game with the side still yet to see victory at Old Trafford since 2014.
"It is a special game because it would be a very important step for the club".
But come full-time there was a real difference of opinion over many aspects of the game as well as Liverpool's team performance. Things this manager wants are becoming more clear to me.
However, even without the injured Paul Pogba, it was United who started on the front foot, adopting a more direct style with Romelu Lukaku the target and the Belgium striker was influential in both Rashford goals.
Mourinho went on to defend his management of Rashford - a player who has made 40 appearances across all competitions this season and 93 in total under United's current coach. We are all in it together.
"When you are in the last 16 it looks really, really far, but when a team gets in the last eight you start smelling the semi-finals".
Mourinho did not take kindly the Dutchman's comments, and launched a scathing attack on him during a press conference on Monday. "No, of course not but he's a player we trust and I told him that before the Liverpool match", added Mourinho.
Not trusting young players is a stick Mourinho has been beaten with since his first spell at Chelsea but a stat has been unearthed that will change your mind on everything you've heard about Rashford recently. He was upset with a player and the same happened to me against Crystal Palace, where I was upset with my player and therefore they [the officials] understood that too. "Maybe with him he would learn how to lose".