Jose Mourinho changed Manchester United's formation to a 4-4-2
Manchester United beat Leicester comfortably 3-0 at the King Power Stadium with goals from Henrikh Mkhitaryan, Zlatan Ibrahimovic and Juan Mata.
However, the goals only started to come late in the second-half after United switched to a more conventional 4-4-2 formation.
And Jose Mourinho believes it was this tactical change that ultimately won his side the game.
Zlatan Ibrahimovic was freed up after Manchester United switched to a 4-4-2 formation
"We went to 4-4-2, the same system as they played," Mourinho told Sky Sports.
"We tried not to give Morgan and Huth a two-against-one fight with Zlatan.
"We played with Marcus [Rashford] there.
Manchester United player ratings against Leicester
Sun, February 5, 2017
Express Sport brings you Manchester United's player ratings from their clash with Leicester City
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David De Gea – 7
"We were fine, stable in the game but I doubted the possession we normally have in the game, the quality we normally have in the game.
"Then we made the change and started finding more spaces. Then the first goal came and when it did, it was easy to us."
United have now extended their unbeaten run in the Premier League to 15 games and have closed the gap on fourth-placed Arsenal to just two points.