The result left United on the verge of reaching the Champions League knockout stages and the Portuguese manager was happy.
Charlie Nicholas was on Sky Sports as a pundit and has had his say on the recent mind-games that Jose Mourinho has been playing with his fellow managers. I never felt we could concede a goal and were solid defensively.
"We are one point from qualifying and one victory away from winning the group with two games at home to play". The teenager caught Rashford's free-kick but couldn't help carrying it over his own line as he back-peddled.
After gaining the promotion into the Premier League playoff, #Huddersfield Town won its first two fixtures in the English uppermost division. The fantastic defensive work Liverpool did against us, Benfica could not do that for the whole game. It didn't look to me like a big thing but we don't know.More news: Phil Jones expected to be fit for Manchester United's clash with Huddersfield
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But Matic, who also played under Mourinho at Chelsea, has revealed why he thinks the Portuguese manager is hard to work with.
"Without any pressure, we knew the goal would arrive", Mourinho said after the Benfica game which was settled by a awful error by the Portuguese side's 18-year-old keeper.
"But we had stats and information about set pieces, so we needed to make him uncomfortable".
United striker Romelu Lukaku and a few others went up to console Benfica's debutant goalkeeper Mile Svilar, who was in tears after the final whistle as his mistake had presented Marcus Rashford with the victor.
Said the Belgian: "I played a good game but could have done better with the goal".