Former Europa League winners Manchester United booked a quarter-final spot in the tournament after their second-string side laboured to a 2-1 home win over LASK Linz to seal a 7-1 aggregate rout of the Austrian side.
Manchester City will discover on Monday whether their appeal against a two-year UEFA ban from European football has been successful.
The UEFA decision is likely to mean Champions League places for 2020-21 will be decided on a points-per-game basis if the remaining matches cannot be played.
UEFA has put all club and national team competitions for men and women"on hold until further notice",European football's governing body said in a statement after deciding to postpone Euro 2020 for a year due to the coronavirus outbreak.
Manchester United beat LASK 5-0 in the Europa League last 16 first leg on Thursday,with the match taking place behind closed doors because of the coronavirus crisis.
Anthony Martial saved Manchester United's blushes as Ole Gunnar Solskjaer's side kicked off the Europa League knockout phase with a draw at Club Brugge.
Arsenal have come from two goals down to draw 2-2 away to Standard Liege and win their group while Dynamo Kiev and Lazio crashed out of the Europa League.
Astana came from behind to beat a youthful Manchester United side 2-1 in the Europa League.
A last-gasp goal handed Celtic a ticket to the last-32 knockout stage in the Europa League while Manchester United,Sevilla and Basel are also through.
Manchester United have ended their wretched 11-match winless run away from home as Anthony Martial's penalty secured a hard-fought Europa League victory.
Arsenal thrashed Belgian outfit Standard Liege 4-0 in the Europa League,while AZ Alkmaar held Manchester United to extend their dismal run in away matches.