FA Cup 2018-19: 4 Reasons why Arsenal could defeat Manchester United at the Emirates

#1 Unai Emery's tactical nous

Once again, Unai Emery's on-point tactics paid

Unai Emery knows what he has to do, and the players he has been trying to sign in January says it all. He knows where Arsenal are lapsing and, with the budget available to him, he is trying his best to help his side finish in the top 4.

Emery's game style of keeping possession of the ball and pressing high up the pitch after possession loss is a style of play, not every player is comfortable with. He is currently working with Arsene Wenger's players, and he needs a complete overhaul in the squad to execute his ideas into the team.

Against Chelsea, he planned and directed the team to go all out attack in the first couple of minutes of the game, making it difficult for Chelsea to enter Arsenal's half. An early strike from Lacazette gave a huge boost to the team, as that was what Emery planned for; scoring first.

Arsenal pressed extremely high up the pitch and Emery played to Chelsea's weaknesses, and this is what he does to every team. He doesn't depend upon a particular style, he adapts and overcomes difficulties with ease.

Though I'm certain Unai Emery won't start all his key players, as they have to play Cardiff and Manchester City next week. He'll approach the game wisely, and I am sure Arsenal are capable of running away with a win.