With things still not working in the 3-5-2 system, van Gaal brought on the striker less than 10 minutes into the second half and changed to a diamond system, with instant impact.
Whilst Wilson wasn’t directly involved, other substitute Marouane Fellaini fired home to give United the lead and from then on the side looked much more confident.
The system certainly allowed Wilson to thrive. Radamel Falcao’s good movement afforded the teenager plenty of room to utilise his pace and van Gaal was thrilled to see Wilson get on the score sheet late on.
“I’m very happy as he’s been close in other games,” he said after the game.
Wilson’s goal game deep into stoppage time as QPR pushed for an equaliser. Angel Di Maria slid in the striker who held his run well before slotting calmly past Rob Green in goal.
It was probably Wilson’s best performance of the season and he looked more comfortable away from the 75,000 crowd at Old Trafford. With Cambridge United next on the horizon, Wilson can expect to start that game and earn himself a place in the side when Leicester come to Old Trafford in a fortnight.