The two outfits shared the spoils in a goalless draw in Bulgaria, so AEK Athens will attempt to lean on their home-field advantage to go through.
Match Replays
Lyon and Fenerbahçe traded blows through their stars in the first match, but neither managed to gain the upper hand ahead of the decisive meeting.
Slovan Bratislava jumped to an early lead last week, but Celje quickly replied, so the outcome of the contest will be determined in Slovenia.
The qualification hangs in the balance since the first game ended with a two-two draw, as Viking managed to dig their way out of an early hole.
Bodø/Glimt have more than one foot in the next stage of the competition after building a two-goal advantage in the first leg despite playing away.
Celtic will look to finish the job in Austria after properly routing LASK, bagging three goals without conceding, in front of their own crowd.
Sabah will have to mount a comeback at home to punch their ticket to the UEFA Champions League group stage after losing two-one in the first leg.
Celtic and LASK are debuting in the competition. Both got off to nice starts in their respective leagues, coming out on top in their first two tilts.
Both sides got past tricky opponents in the past stage, as NEC Nijmegen eked it out versus Olympiakos, while Bodø/Glimt bested Union Saint-Gilloise.
After a long and winding road, one between Sabah and Hapoel Be'er Sheva are poised for their first-ever UEFA Champions League group stage appearance.
Slovan Bratislava and Celje meet after going through two playoff rounds. The hosts won convincingly the last time the two teams collided in 2024.
Fenerbahçe previously edged out Gornik Zabrze and Sturm Graz, while Lyon got the best of Sparta Praha to set up this high-profile playoff matchup.