Brighton & Hove Albion head coach Roberto de Zerbi will provide an update on the fitness of his squad later on Friday.
Levi Colwill is ineligible to face his parent club, while recent absentees have included Joel Veltman and Kaoru Mitoma.
Chelsea head coach Graham Potter will return to his previous club without several key players.
Kalidou Koulibaly's knee issue will be assessed.
CHRIS SUTTON'S PREDICTION
After five games in charge, Roberto de Zerbi is still waiting for his first win as Brighton boss.
That means he already had his predecessor, Graham Potter, looming over him - now he goes directly up against him on Potter's first return to the club where he did such a good job.