#3 Targeted Pressing
Unai Emery has tried to adopt a high pressing approach at Arsenal to varying degrees of success. Against Chelsea, the pressing must be a targeted type with David Luiz and Jorginho as the major targets.
David Luiz is arguably the best defender on the ball in the Premier league. He has attempted 1690 passes and completed 1502 of them.
The Brazilian has also played 31 through balls which is by far the highest in the league. Chelsea have thrived on his long balls and diagonals to devastating effect this season as seen in Pedro's goal vs. Newcastle.
The Italian midfield maestro, Jorginho, has played 1997 passes and completed 1808 of them. He tops the PL in both categories. He has also played 14 through balls which is behind only David Luiz's 32 in the ranking.
Unai Emery's Arsenal must target both players and press them as a team. They are both great on the ball but suffer significantly when pressed. The Spurs victory against Chelsea showed the importance of pressing both players and that tactic can also be utilized by Emery's Arsenal.