Premier League 2018-19: A combined XI of Arsenal and Chelsea for the London Derby

RB: César Azpilicueta (Chelsea)

The Spaniard gives reliability at the back

One of the best in that position, César is a leader and the organizer of the Chelsea back line. The Spaniard often moves up and down the flank and has a deadly right foot, which fits in some dangerous crosses for the strikers to poke it in.

It's always hard to replace someone like Ivanović, but the former Marseille man grew in stature and confidence and is now the most dependable member of the squad.

CB: David Luiz (Chelsea)

Luiz has performed well under Sarri.

David Luiz is one of those players who can be immensely enjoyable on his day but can also be frustrating at times. The Brazillian had a tremendous first season under former manager, Antonio Conte but has found himself short of game time in the second campaign.

However, once Maurizio Sarri arrived, things have looked bright for Luiz, who is now a regular starter in the side. The Italian likes to play out from the back with the player being the only ball-playing center half Sarri has in his ranks. In recent times, Luiz has been seen playing some long hopeful balls down the line which resulted in quite a few goals, with the latest assist coming against Newcastle at Stamford Bridge.

CB: Laurent Koscielny (Arsenal)

Koscielny has returned after a long lay off due to injury.

The decision to include Laurent Koscielny in the combined XI is for his experience and leadership skills. The Frenchman has been out for a long time with injuries and recently made a comeback to the starting XI. Despite that, he remains Arsenal best defender among the current squad.

Koscielny's anticipation and positioning are immaculate. Though he has aged a bit, he still has the legs to chase down most center forwards in the Premier League. In any big game, Emery could turn to Koscielny, who also has a knack of chipping in with crucial goals.

LB: Saed Kolasinac (Arsenal)

Kolasinac is known as the 'Tank'

It's a tough choice between Chelsea's Marcos Alonso and Arsenal's Saed Kolasinac, but the Bosnian has got the nod only because of his current form. The Gunners have struggled in recent times, but Kolasinac has been consistent with his performances, repeatedly marauding up and down the left flank, providing support to both attack and the defense.

He is nicknamed 'The Tank' and rightly so, given his physique and stamina. Kolasinac can use his body brilliantly, which often makes it difficult for any player to dispossess him off the ball. He is now a regular in the starting XI and an important aspect in Arsenal's bid for a top-four finish.