LONDON, ENGLAND - SEPTEMBER 20:  Unai Emery, Manager of Arsenal gives his team instructions during the UEFA Europa League Group E match between Arsenal and Vorskla Poltava at Emirates Stadium on September 20, 2018 in London, United Kingdom.  (Photo by Henry Browne/Getty Images)

4 Key Battles That Could Decide Arsenal's Premier League Clash with Everton on Sunday

Confidence will be high at the Emirates after Arsenal's midweek win in the Europa League. With three victories on the bounce in the Premier League, Unai Emery's side welcome Everton to north London.

Marco Silva and his players, having lost at home to strugglers West Ham, will be desperate to avoid back to back defeats. Brazilian star Richarlison makes a timely return to Everton's squad having served a suspension for head-butting Bournemouth's Adam Smith.

With 13 goals scored in the sides' last two league meetings, goals can certainly be expected on Sunday. Here are four key battles to look out for.

1. Hector Bellerín vs Richarlison

With Richarlison back from a two game suspension, Bellerin is going to have to be at his best defensively to keep the Everton man quiet. With a goal on his international debut, the Brazilian's confidence will be sky-high.

The Spanish full back has made a solid start to the season and displayed his attacking ability with an assist against West Ham. Defensively, however, the 23-year-old can still be found wanting and will be wary of leaving any space in behind for Richarlison to exploit.

2. Alexandre Lacazette vs Jordan Pickford

Following a superb World Cup for England, 24-year-old Pickford will be disappointed in failing to keep a clean sheet so far this season. Despite having a weakened defence ahead of him largely due to injuries, the shot-stopper hasn't been called into action too regularly for his side, making just 14 saves this season.

Lacazette will undoubtedly test Everton's defensive resolve on Sunday, with the striker looking to add to his solitary goal for the season. The striker has looked increasingly sharp in recent weeks, boosted by the creativity of Mesut Ozil and Aaron Ramsey behind him.

3. Granit Xhaka vs Idrissa Gueye

Swiss midfielder Xhaka has become a key figure in Arsenal's midfield. Not the most mobile, the 25-year-old's ability to recycle possession and distribute effectively enables Arsenal's attackers to capitalise on gaps in the opposition backline.

Everton midfielder Gueye will be in direct competition with Xhaka on Sunday. The diminutive midfielder's aggressive, all-action style of play is likely to disrupt Xhaka's ability to get on the ball and dictate play for the home side.

If Everton press effectively through Gueye and his midfield partner Schneiderlin, Arsenal will struggle to create for their forwards.

4. Petr Cech vs Theo Walcott

Veteran Petr Cech has struggled with Emery's desire for his goalkeeper to play out from the back. The tactical shift has seen the 36-year-old gift possession to the opposition on numerous occasions when pressed.

Walcott will be eager to impress upon his return to the Emirates and will know Cech's flaws all too well. Walcott's finishing, especially in one-on-one situations, has never been questioned. 

Should the England international find himself through on goal against a porous Arsenal defence, he will fancy his chances of getting the better of former teammate Cech, who faces increasing competition for his place from German keeper Bernd Leno.