Arsenal will assess Jack Wilshere and new signing Pierre-Emerick Aubameyang (both illness), while Danny Wellbeck (muscular) remains sidelined. Henrikh Mkhitaryan will start, says Arsene Wenger.
Everton are deliberating over Seamus Coleman after a first appearance in 10 months. Leighton Baines (calf), James McCarthy (broken leg) and Ramires Funes Mori (knee) are out.
Arsenal have never lost a Premier League match at Emirates Stadium in February (P21 W17 D4 L0). Their last home defeat in this month was in 2006 against West Ham at Highbury.
Everton have played 11 PL matches at Emirates Stadium without winning (W0 D4 L7), more than any other club.
Mesut Ozil could become the fastest player to reach 50 PL assists, having set up 49 goals in 136 appearances. The quickest player to reach the milestone was Eric Cantona, in 143 matches.
Sam Allardyce will become the fifth manager to reach 500 PL matches. Of the previous four, only Arsene Wenger won his 500th match in charge. Harry Redknapp drew, while Sir Alex Ferguson and David Moyes both lost.
Arsene Wenger: "Theo [Walcott] played over 300 games for us. I bought him when he was 16 and know how well he can be. He will be a major threat for Everton."
Sam Allardyce: "The win over Leicester eases the pressure and the players were starting to feel that after a few games without a win."
Referee: Neil Swarbrick
Assistants: Constantine Hatzidakis, Daniel Cook
Fourth official: Craig Pawson