Chelsea routed United 4-0 and Mourinho, once adored by the home fans, took exception to Conte's wild celebrations after his side's fourth goal.
Everton, Man United, Crystal Palace and Watford comprised last year's semi-final teams, but the tournament looks set to be dominated by the Premier League's big guns this time around.
Perhaps the stand-out moment of Hazard's season so far came in last month's 3-1 win over Arsenal, with the Belgian deciding the outcome of the game with a dazzling individual goal early in the second half.
And, speaking ahead of the game, Conte said he hopes it is not the legendary skipper's final game for the London club.
It means that Chelsea once again go ten points clear at the top, but with only 11 games left, it's going to be hard for any side to stop them winning a fifth title in 12 years.
"We have a trophy in our pocket and that is a good feeling for everybody". It's not Chelsea's fault that we'll play on Monday.
Attorney: ICE detainee, activist Daniela Vargas to be released
Meanwhile, her attorneys will pursue further legal action, including a request for a stay of attempts to remove from the country. Her lawyers have filed a writ of habeas corpus in federal court to have the order removed.
The veteran defender has been a peripheral figure at Chelsea and despite remaining club captain, Terry has played just six minutes of Premier League football since his last start in September against Swansea.
As we know, Chelsea sacked Mourinho last season following an very bad start and now appear to be much better off with Conte at the helm.
"We know this Europa League is very important for us, and the FA Cup is lovely". I don't think it's a problem for them to compete against us.
"It's a fantastic game, for us, for the neutral, for everyone involved, it's a huge game", Cahill said.
Perhaps the most interesting question is not one of personnel but of shape: United faced off against Rostov with a highly-unusual-for-Mourinho back three. Now we are in March and we are on top of the table.
Chances were scarce but it was with their first decent bit of play that United got their goal.