West Ham boss David Moyes admits he's unsure of his AFCON absences.
Moyes could lose up to four players for the Africa Cup of Nations, with Said Benrahma and Maxwel Cornet in the frame for the Algeria and Ivory Coast squads. Morocco's Nayf Aguerd and Ghana's Mohammed Kudus could also leave.
Moyes said, "I can't give you an answer on that.
We've not had confirmation on any of our African Nations players on their join-up dates, which is very unusual.
"Mo is a very important player so we're hoping there is a chance he could be available to face Brighton."