Bryan Mbeumo (Cameroon), Amad Diallo (Ivory Coast) and Noussair Mazraoui (Morocco) could all leave for the respective nations this week.
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But Amorim, after Monday's win at Wolves, says they are in talks with all three federations about delaying their departures until after the Bournemouth game.
"The club is talking with the national teams," he explained. "Let's wait for the middle of the week.
"I don't know for sure, but we are doing our job and the national teams are talking with us and that is a good sign."