Mo Bangura is set to face his parent club Celtic in the UEFA Champions League third qualifying round.
The striker is currently on loan with Swedish side IF Elfsborg, who have been drawn against the Scottish champions in the competition.
Neither side are confirmed as having reached the next stage but are expected to progress, with Celtic 3-0 up on Cliftonville and Elfsborg 7-1 ahead against FC Daugava.
That has raised the possibility of the 23-year-old coming up against his employers, with UEFA rules not prohibiting a player on loan coming up against his parent side.
Speaking to STV after the draw, Elfsborg's club operations manager Stefan Andreasson said the striker would be in their squad to face Celtic.
"He will play," Andreasson told STV. "I have sent an SMS to Peter Lawwell about the game but not about Bangura. He knows the agreement.
"Bangura is doing well with us. We have had an OK start in the league and he is an important player for us."
A statement from UEFA confirmed their rules do not forbid Bangura from playing against Celtic.
"As we, in line with the FIFA regulations on status and transfer of players, consider a loan to be a transfer, we do not have any regulations regarding players not playing against their parent club whilst on loan to another club," the governing body told STV.
"If a player is duly registered on the player list of IF Elfsborg then he can play against any team that Elfsborg are drawn against.
"Any agreement between the two clubs that this player wouldn’t play against Celtic should Elfsborg be drawn against them is purely between the clubs.
"UEFA would not have any involvement or consideration of this agreement, it would be neither endorsed or enforceable by UEFA."
Bangura, who is on loan to Elfsborg until December, has netted six goals in 17 games, including a goal in their 7-1 win over FC Daugava.
Signed by Celtic from AIK in 2011, the player failed to make an impact in Glasgow, scoring no goals in 16 competitive appearances.
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