Celtic's hopes of reaching the Champions League group stages were ended after they crashed to a 2-1 home defeat to Hungarian champions Ferencvaros in the second qualifying round at Celtic Park
Neil Lennon's side last reached the group stages in 2017, but they fell behind inside seven minutes on Wednesday night when David Siger's 20-yard strike found the bottom corner
Celtic dominated possession and deservedly levelled eight minutes into the second period when Ryan Christie's effort deflected in
But striker Tokmac delivered the decisive blow with a cool finish beneath Vasilis Barkas to consign the Scottish champions to their worst performance in the competition since Artmedia Bratislava knocked them out in 2005
Two seasons ago, it was AEK Athens while last campaign it was Cluj, and Celtic may now have to negotiate the third qualifying round and a play-off to reach the group stages of the Europa League
This was a good opportunity for Celtic to progress in the Champions League and this will be a bitter pill to swallow
 They were without their talisman Odsonne Edouard and it showed in torrential conditions in the East End of Glasgow in the opening 45 minutes
Having routed Icelandic champions KR Reykjavik 6-0 in the opening qualifying round, this was a huge step up in class against a side unbeaten in their last seven European games on the road
Ferencvaros may previously played just two competitive matches this season, but Hungary's Green Eagles have just secured back-to-back titles under Sergei Rebrov - and his team were in front inside seven minutes
Celtic failed to clear Isael's corner and as the ball broke kindly on the edge of the box for Siger, the midfielder moved away from Scott Brown before finding the bottom corner with an unstoppable drive
Lennon, who surpassed his old manager Martin O'Neill's milestone by taking charge of Celtic in a European game for the 54th time, knew his side would need to be patient, having been surprised by their opponents' 3-4-3 formation
 Chances duly fell their way as the opening period progressed but all from distance
Remarkably, Celtic had 16 shots and had 69 per cent possession but only three of those attempts were on target and all were comfortable for Denes Dibusz in the Ferencvaros goal
Mohamed Elyounoussi and Callum McGregor both saw low drives hit the side-netting while Christie's tame effort was straight into the gloves of Dibusz as an animated Lennon headed down the tunnel at the interval
Celtic started the second period with intent, with Olivier Ntcham's inviting delivery evading everyone, but within eight minutes of the restart the Hoops were deservedly level, albeit with a slice of good fortune
Greg Taylor and Elyounoussi were involved as the ball was set up for Christie, and his shot looped over Dibusz via a deflection off Adnan Kovacevic
Celtic had the chance to go ahead when Hatem Abd Elhamed's centre was met by Ntcham, but his volley struck the underside of the crossbar
 It was one-way traffic as Taylor's cute pass was finished well by Elyounoussi but from a fractionally offside position
Lennon would have been delighted with the reaction from his players, but they were undone by a sucker punch in routine fashion as a long clearance surprised Elhamed, allowing Tokmac to gain a yard and finish low beyond Barkas
Celtic brought on Albian Ajeti and still had a number of chances to force the game into extra-time as Christie's low cross from the byline just failed to pick out Elyounoussi, and when Ntcham's speculative shot trundled through to Dibusz, Celtic's game was up
Just three days after Bayern Munich won last season's Champions League, Celtic are already out of the 2020/21 edition, with Lennon keeping his players in the home dressing room for some time after the final whistle
Celtic boss : "I'm devastated
 It shouldn't happen
 It's a poor result and we dominated the game
 We had so many chances but we conceded two really poor goals
 We all have to take responsibility for it
 I have to take responsibility in terms of the team selection but we had more than enough chances to win the game twice over
"For the first goal, only Browny is getting out to close the shot while the second one is an individual error which we should've dealt with comfortably
"It was a basic mistake
 We're making basic defensive mistakes and sometimes you can't legislate for that
 We did the same against Copenhagen when we were on top
 Hatem was in a decent position and all he had to do was deal with it but he doesn't
 But in the final third we should've done better as well as we had so many chances to score
"The players need to buckle up
 They've been OK but some of their attitudes needs to be better
 I'm just detecting a bit of malaise sometimes among them and they're not as good as what they think they are
 We need to analyse where we went wrong and focus on the rest of the season
"Ferencvaros boss : "We have beat one of the best teams we have faced in qualification last year and this year
 They have quality players, but I think we deserved this
 Most of the time we defended, but football is about scoring the goals, not about the possession of the ball
"The story of the game is that Lennon gambled with his team selection
 Odsonne Edouard was injured and what a difference to the team he makes
 He didn't play tonight and Lennon went with four midfielders as his front four
 There was no recognised striker despite having Ajeti, Ismaila Soro and Patryk Klimala on the bench
It's a massive victory for Ferencvaros as they do not compare to Celtic in terms of their budget
 This is a huge disappointment to Celtic and their supporters
 It is Europa League football for them, and the gamble of not playing with a striker has not paid off for them
Celtic couldn't have asked for a better luck of the draw to get to the group stages, playing both their qualifying rounds at home
 Ferencvaros were very smart, getting the early goal and then defended deeply
 Celtic lacked the killer instinct inside the box and that was down to the fact they had no strikers on the pitch for around 70 minutes
It was all a bit powder-puff around the box and these games define your season
 The pressure could now be on Celtic to sell one of their players - who knows, even Edouard who is already attracting interest from some of the big clubs in England
 It's such a huge blow for everyone who wanted Celtic to go through tonight
Celtic host Motherwell in the Scottish Premiership at 3pm on Saturday
 Lennon's men are now likely to enter a one-legged Europa League third qualifying round tie on September 24, although they could be one of two teams drawn to go straight through to the play-off round
 The draw takes place on Tuesday
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>