Celtic could be handed a sensational Champions League reprieve after UEFA launched an investigation into the eligibility of one of Legia Warsaw's players during their 6-1 aggregate win over the Scottish champions.
The Polish side confirmed that they had been asked for information from the European governing body.
A statement on Legia's official website read: "The club announces that in connection with the Celtic FC-Legia Warsaw match in the second leg of the third qualifying round of the Champions League, UEFA opened an investigation into the participation of Bartosz Bereszynskiego.
"The club is preparing the relevant information and explanations, which will be sent to UEFA today.
"The result of the investigation will be announced immediately after its completion."