The Gunners boss admitted that Sanchez was struggling mentally following his exploits with Chile over the last fortnight, which saw him come in for criticism in his homeland after two crushing World Cup qualifying defeats.

Wenger has responded by restoring club-record signing Alexandre Lacazette to the starting lineup, with attacking support from Mesut Ozil and Danny Welbeck.

Fellow summer arrival Sead Kolasinac also earns a recall following Alex Oxlade-Chamberlain's departure for the Reds, with Hector Bellerin, Aaron Ramsey and Granit Xhaka retaining their places in the midfield.

Despite speculation that he might switch formation, Wenger has stuck with three at the back and swapped out Rob Holding for Shkodran Mustafi on the right of the defence. Laurent Koscielny starts despite picking up a knock during his exploits with France, while Nacho Monreal is at left-back and Petr Cech is between the posts.

Other options for Wenger on the bench include Olivier Giroud, Theo Walcott and Alex Iwobi.

Eddie Howe makes one change for the Cherries and switches to an expected 3-4-3 formation as he looks to bounce back from the late 2-1 defeat to Manchester City last time out.

Ryan Fraser joins Joshua King and Jermain Defoe in the front three, with Andrew Surman dropping down to the bench as a result.

Adam Smith is expected to play further forward on the right of a midfield that also includes Dan Gosling, Harry Arter and Charlie Daniels, while Steve Cook, Nathan Ake and Tyrone Mings are in defence ahead of Asmir Begovic in goal.

Elsewhere, captain Simon Francis is named among the substitutes after overcoming a hamstring injury.

Arsenal: Cech; Mustafi, Koscielny, Monreal; Bellerin, Ramsey, Xhaka, Kolasinac; Ozil, Welbeck; Lacazette
Subs: Ospina, Mertesacker, Coquelin, Iwobi, Walcott, Sanchez, Giroud

Bournemouth: Begovic; S Cook, Ake, Mings; A Smith, Gosling, Arter, Daniels; King, Defoe, Fraser
Subs: Boruc, Francis, Surman, L Cook, Pugh, Ibe, Mousset

Keep up with all of the action from the Emirates this afternoon with Sports Mole's live text commentary here.