This was a classic of sorts that featured two more Marcus Rashford goals, a sold-out stadium witnessing Louis van Gaal pleading from the floor to the fourth official, and Manchester United recording a victory that is a serious blow to Arsenal’s title hopes. If the 10-1 odds offered during the game on Rashford making England’s Euro 2016 squad seem hasty these may be viewed generous if he continues the Hollywood start to his United career. Just as his twin strikes secured United’s passage against Midtjylland into the Europa League last 16, so his Premier League debut ended after 80 minutes with him having created Ander Herrera’s winner to complement his two goals. The Spaniard’s strike came before the Van Gaal pantomime but tempers were already fraying when the manager decided to do what he rarely ever does: leave his seat. This received a raucous reception from the crowd. When Van Gaal yelled at Mike Dean, the fourth official, and dived to the turf to mimic how he believed Alexis Sánchez was trying to claim a foul, the place went through the roof. It had the fans singing “Louis van Gaal’s army” for the first time in a long time and…