Two changes for Albion as Lamptey and Gilmour come in for Veltman and Caicedo.
Arsenal take early lead through Saka, who fires in from close range.
Odegaard adds a second with a smart finish from 16 yards, before Nketiah pokes home just after the restart for Arsenal's third.
Mitoma pulls one back, curling it into the bottom right corner from Gross's pass.
Martinelli finishes off a marauding run with a poked finish to restore Arsenal's three goal advantage, but Ferguson makes it 4-2 with 15 to play.
This website employs cookies to improve user experience. If you continue on this website you will be providing your consent to our use of all cookies. Click the link to find out more about the cookies. Please note, if you do turn non-essential cookies off, this will limit the service that we are able to provide to you and may affect your user experience. Find Out More