Besiktas, Kasimpasa and BB Erzurumspor have all announced positive coronavirus tests in the past 24 hours.
Liverpool will welcome back Loris Karius after the goalkeeper brought a premature end to his loan spell with Besiktas.
Linked with moves, could Kylian Mbappe and Lautaro Martinez instead sign renewals?
On loan at Besiktas from Liverpool, goalkeeper Loris Karius is still in contact with Jurgen Klopp.
Manchester United got Odion Ighalo on loan, West Ham spent big on Jarrod Bowen and Marko Pjaca left Juventus on deadline day.
Diogo Jota's 11-minute treble off the bench saw off Besiktas, leaving Nuno Espirito Santo satisfied by Wolves' performances in Group K.
Wolves may still face Ajax or Inter in the last 32 of the Europa League after a second-half blitz against Besiktas at Molineux.
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Despite being on loan at Besiktas, Loris Karius feels he may still have a future at Liverpool.
Wolves beat Besiktas in Thursday's Europa League clash at Vodafone Park through Willy Boly's 93rd-minute winner.