Metalist was to face Schalke next week in a first-leg match but first-leg match.
Lausanne, Switzerland: Metalist Kharkiv has asked sports' highest court to issue an emergency ruling that would freeze its expulsion from the Champions League for match-fixing in 2008.
The Court of Arbitration for Sport says it has asked UEFA and Greek club PAOK Thessaloniki, which was reinstated in Metalist's place, for "written observations" on the case.
CAS says it expects to provide an update by Friday evening.
Metalist was to face Schalke next week in a playoff round, first-leg match. But UEFA disqualified Metalist on Wednesday and restored beaten third qualifying round opponent PAOK to the competition.
UEFA acted after CAS upheld a five-year ban for Metalist's sports director in a Ukrainian league match-fixing case.
He was implicated in paying an opposing team's players to lose a match which Metalist won 4-0.