Ukrainian club Metalist Kharkiv have been expelled from the Champions League by UEFA following a match-fixing inquiry.
Metalist were due to face German side Schalke next Wednesday in the first leg of the competition’s play-off round.
However, they could be temporarily reinstated if they appeal to the Court of Arbitration for Sport (CAS).
Metalist were charged by Uefa last week after CAS upheld a five-year ban against sporting director Yevhen Krasnikov for alleged match-fixing.
The ban, by the Ukrainian Football Federation, was for alleged involvement in the fixing of a 2008 Ukrainian league match with Karpaty Lwiw.
UEFA has disqualified the club from European competitions for the 2013-14 season but if Metalist submit an urgent appeal to CAS, the court can suspend sanctions, allowing the club’s debut
Champions League campaign to continue.
If the side fails to be reinstated, their place against Schalke could go to Greek club PAOK Thessaloniki, who they beat in the third qualifying round last week.
UEFA says its emergency panel will meet later on Wednesday “to consider the consequences of the decision”.
Arsenal’s Champions League play-off opponents Fenerbahce were banned from competing in Europe in June for their involvement in domestic match-fixing but have appealed to CAS.
CAS says a final decision in that case will be made by 28 August, after the second leg of the play-off, but UEFA says no decision has yet been made regarding what would happen if Fenerbahce won the tie and lost their appeal.