Celtic suffered one of the most extraordinary European collapses in their history as LASK overturned a four-goal deficit to send Martin O’Neill’s side crashing out of the Champions League.
After cruising to a 3-0 first-leg victory in Glasgow last week, Celtic appeared to have one foot firmly in the competition’s lucrative league phase. Callum McGregor’s early goal stretched their aggregate lead to four and seemingly putting the tie beyond doubt.
Instead, everything unravelled. The hosts produced an astonishing comeback, scoring five unanswered goals across the remainder of the match and in extra-time to seal a 5-4 aggregate victory. Celtic will now drop into the Europa League, while veteran manager O’Neill is left to contemplate a monumental collapse that could cost the club millions in lost revenue.
The evening initially appeared to be following the same script. Celtic had already done the hard work at home, but LASK had shown enough attacking threat in the first meeting to suggest the tie was not entirely dead.
Kasper Hogh came close to giving the hosts the perfect start when he narrowly missed connecting with a dangerous low cross from Yang. The striker then had another opportunity shortly afterwards, although his effort lacked the power to trouble Celtic.
At the other end, Celtic were given an early warning when a deflected LASK effort struck the post before McGregor then appeared to deliver the decisive blow. The captain found the net via a deflection to put his side four goals ahead in the tie, sending the travelling support wild.
But the contest was about to take a remarkable turn. Benjamin Nygren’s misplaced back-pass gifted Moses Usor with the opportunity LASK needed, and he made no mistake. Suddenly, the home side had belief and Celtic began to look increasingly uncomfortable.
Robert Ljubicic struck after the interval to reduce the deficit further before Samuel Adeniran added another, leaving Celtic clinging to their advantage. The momentum had completely shifted.
LASK continued to attack with Celtic pinned back deep inside their own half, and the influential Adeniran came agonisingly close when his effort rattled the underside of the crossbar.
Celtic were now hanging on and they could not withstand the pressure. Florian Flecker struck in the 90th minute to force extra-time, completing a stunning turnaround and leaving Celtic facing an unthinkable 30 minutes.
The nightmare continued. Adeniran scored again in extra time to put LASK ahead on aggregate, completing his outstanding contribution. Substitute Reo Hatate then conceded a penalty, although visiting keeper Viljami Sinisalo came up trumps by making a big save.
That miss briefly offered Celtic a lifeline. It ultimately mattered little as LASK held on to complete one of the most remarkable comebacks in the competition's recent history, while Celtic were left to pick through the wreckage of a tie that had appeared to be comfortably under control. A capitulation of epic proportions.
A place in the Champions League had promised a significant financial boost and the opportunity to strengthen the squad from a position of strength. Instead, Celtic must now regroup and prepare for Europe’s second-tier competition.
We give each player a mark out of ten for their display on a demoralising night in Austria.

1. GK: Viljami Sinisalo (4/10)
An extremely busy night and part of a backline that shipped five goals. Looked unconvincing at times. Fortunate to see Andrade's deflected effort bounce off his right-hand post with the Finn beaten. Beaten by Usor's low shot for the equaliser and no chance of saving Adeniran's sensational 25-yard strike. Helpless as Adeniran crashed a ferocious shot off the bar. Remarkable save from Flecker's initial effort but let down by his backline in reaction to the rebound. Saved Adeniran's spot-kick. | SNS Group

2. RB: Colby Donovan (6/10)
Impressive again, both defensively and offensively. Very economical and tidy in possession. Looked like a seasoned European pro until being forced off in the closing stages clutching his right hamstring. Continues to develop at a rate of knots and could be the answer to Celtic's right back troubles long-term. | Getty Images

3. CB: Cameron Carter-Vickers (6/10)
Read the game well. Strong intervention to deny Ljubicic's goal-bound effort and took a sore one in the process. Brilliant to get his body between Adeniran and the ball shortly after the restart. Made some timely blocks and soldiered on with cramp in the closing stages. Made way at the start of extra-time and indicating he was unable to continue. | SNS Group
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4. CB: Auston Trusty (4/10)
Recovered from a stomach bug that kept him out of training on Monday. Commanding presence in the air, but outmuscled far too easily for LASK's second goal and was completely overrun in the closing stages as the Austrians laid siege on the visitors goal. | SNS Group