Ex-Arsenal duo Johan Djourou and Alex Song are two of the nine players that have been sacked by Sion.
The Swiss club took the extraordinary steps after nine players refused to take a pay-cut in the wake of the coronavirus pandemic.
The European nation's league was halted indefinitely because of the outbreak, causing great financial stress on clubs.
The seven other players released are Xavier Kouassi, Pajtim Kasami, Ermir Lenjani, Seydou Doumbia, Mickael Facchinetti, Christian Zock and Birama Ndoye.
The news is yet to be confirmed by Sion.