That’s according to Thierry Henry who reckons the influential duo will be restored to the first XI.
Sanchez was left out of side that drew 0-0 with Chelsea.
Ozil also missed the match through injury but is now fit.
Alex Iwobi and Danny Welbeck impressed in their absence, but a groin injury to Welbeck has ruled him out of contention.
Henry thinks Ozil and Sanchez will come in for Welbeck and Iwobi as Arsene Wenger eyes a home win over the Baggies.
“It’s time to bring the big guns on the field,” Henry said on Sky Sports.
“The other day he (Arsene Wenger) didn’t do it against Chelsea, he didn’t bring back Alexis Sanchez when we all thought he was going to start.
“Is he going to do the same thing? I don’t think so.
“I think being at home he is going to play Mesut (Ozil) and he’s going to play Alexis Sanchez, being at home to West Brom.
“No disrespect to West Brom, but it’s a good game to come back and for Alexis Sanchez to start at home this season.”
Arsenal: Cech; Koscielny, Mustafi, Monreal; Bellerin, Xhaka, Elneny, Kolasinac; Ramsey, Sanchez; Lacazette.
West Brom: Foster, Nyom, Evans, Dawson, Hegazi, Gibbs, Livermore, Barry, Krychowiak, Rodriguez, Robson-Kanu.
