Arsenal manager Mikel Arteta says Oleksandr Zinchenko has not yet been ruled out of their remaining games after he was forced off during the win at Newcastle United with a calf injury.
Kieran Tierney is expected to deputise at left-back on Sunday, while William Saliba remains out.
Brighton duo Solly March and Adam Webster are both unavailable due to injuries sustained against Everton.
Evan Ferguson could start for the first time since 15 April.
CHRIS SUTTON'S PREDICTION
What a great game this will be, and I am fascinated to see how both sides approach it.