It remains to be seen what kind of side the Gunners boss will name given they face Chelsea in the FA Cup final six days later.
Watford need to better Aston Villa's result to secure their top-flight survival.
Caretaker manager Hayden Mullins will go into the game at the Emirates Stadium with the same squad available that slipped to a 4-0 defeat to Manchester City last time out.
Arsenal provisional squad: Martinez, Macey, Bellerin, Soares, Sokratis, Luiz, Holding, Kolasinac, Tierney, Xhaka, Guendouzi, Torreira, Ceballos, Maitland-Niles, Willock, Ozil, Nelson, Pepe, Aubameyang, Lacazette, Nketiah.
Watford provisional squad: Foster, Gomes, Masina, Femenia, Holebas, Mariappa, Cathcart, Dawson, Kabasele, Cleverley, Chalobah, Hughes, Doucoure, Quina, Penaranda, Pereyra, Sarr, Deeney, Welbeck, Pedro, Gray, Pussetto.