Danny Welbeck is not included in the squad
Only Shkodran Mustafi keeps his place in the team which means FA Cup hat-trick hero Theo Walcott drops to the bench.
Danny Welbeck is not included in the squad despite taking part in training yesterday.
For Watford, there's no place in the squad for Odion Ighalo, who is on the verge of completing his move to Chinese Super League club Changchun Yatai for £20m.
But M'Baye Niang will make his debut for the club from the start.
Arsenal transfers: Deadline day ins and outs rumours rated
Tue, January 31, 2017
Football Whispers have rated Arsenal's chances in the transfer market on deadline day (1 – unlikely, 5 – likely)
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Football Whispers have rated the likelihood of Arsenal’s deadline day transfer d
Arsenal: Cech, Gabriel, Mustafi, Koscielny (c), Monreal, Coquelin, Ramsey, Iwobi, Ozil, Alexis, Giroud
Subs:Ospina, Gibbs, Bellerin, Maitland-Niles, Oxlade-Chamberlain, Walcott, Lucas Perez.
Watford: Gomes; Cathcart, Kaboul, Prödl, Britos; Behrami; Janmaat, Cleverley, Capoue, Niang; Deeney (c)
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Subs: Arlauskis, Mariappa, Mason, Watson, Doucoure, Success, Okaka.