2nd goal was Blind's fault. You can't expect Herrera facing away from the goal to catch up to Bruma who's very fast. It's a team sport, where the CB has to be quick to react and close down Bruma. Blind with his lethargic pace was 5 yards off from Bruma giving him an easy shot at goal. Not too worried as Smalling would have had that closed down.
Still Herrera didn't have a great game, but he worked hard and won the ball high up the pitch several times. If Rooney was remotely useful as a player in the first half, one of those counter attacks would have resulted in a goal. With Pogba coming thought, don't know how Herrera, Scheiderlin, Fellaini, and Carrick can compete for the remaining 3 spots. One of them also has to go along with BFS, and we can use TFM as a backup DM if we are hit with injuries.