And it was relentless victor Jose Mourinho who emerged victorious at Wembley, where Alexis Sanchez cancelled out Dele Alli's opener before Herrera secured a 2-1 triumph as Tottenham failed to progress from a record eighth successive FA Cup semi-final.
Liverpool's 2-2 draw at West Brom in the Premier League also means United need just seven points from their remaining four league games to secure second place behind champions Manchester City.
"No doubt he is one of the best keepers and he has shown that over the last four years with us". We played the whole season at Wembley which you know is very hard to play.
"But I think Tottenham need to keep going in this direction".
"I think you grow up with criticism and pressure an intense work mentally and physical and I think we are growing up and two very good performances this week using nearly every player of the squad".
Mourinho feels that United were the better team on the day and deserved to book their place in the final, where they will meet the victor of Sunday's semi-final between Chelsea and Southampton.
"The club is doing the right things, and to keep pushing". We can't throw it away.
"Of course, we are in a process to arrive to the semifinal and be competitive in the Champions League and competitive in the Premier League, fighting for the top four". "We have to try and pick ourselves up and finish the season strongly".
"It was calm because we had the feeling it was going to be very hard to lose the game". "It will be a successful season if we assure our position".
Spurs were stunned and Lukaku fizzed into the side-netting before being comfortably denied by Vorm.
And his cross was inch-perfect for Alli to apply the finishing touch for his 13th goal of the season.
Harry Kane and Son Heung-min had already seen shots deflected behind, before Spurs went in front with a brilliant team goal on 11 minutes.
"We can close the season in a final and that's a good achievement".
Pogba and Sanchez have been the two marquee signings of Mourinho's time in charge, but both have largely failed to meet the standards expected of them this season with Mourinho even dropping Pogba regularly throughout the campaign.
"I's so important to keep going, focusing on working and developing that philosophy which is fantastic for the club. If you do the basics then in some games your talent makes the difference".