Three Standard Liege players and a member of the backroom staff have tested positive for Covid-19 ahead of Thursday's Europa League match against Rangers.
Michel-Ange Balikwisha and Nicolas Raskin, who both started the team's draw against Club Brugge at the weekend, as well as defender Moussa Sissako and goalkeeping coach Jan Van Steenberghe have all got the virus.
The quartet have all entered a period of isolation and will play no part when Steven Gerrard's side visit Stade Maurice Dufrasne for the first match of the group stage, or the subsequent league game.
In a brief statement on their website Standard also announced that Damjan Pavlovic and Abdoul Fessal Tapsoba will be kept away from the rest of the squad. The pair have both tested negative ahead of the match but share a house with Sissako and spent time with him on Tuesday.