Celtic host Paris St Germain in their opening Champions League group game on Tuesday night (live on BT Sport 3, 7.45pm kick-off).
Brendan Rodgers’ side are taking on the likes of Neymar, the most expensive player in the world, and Kylian Mbappe, who is set to become the second most expensive when he makes a loan move from Monaco a permanent deal next summer.
But Celtic have triumphed against the odds in the past on European nights and here we look back at some memorable occasions in the east end of Glasgow.
1967 – Celtic 2 Vojvodina 0
Celtic only lost one game en route to the 1967 European Cup final and the 1-0 defeat against Vojvodina in Yugoslavia threatened to derail their progress. The visitors caused Celtic problems in the first half of the quarter-final second leg and Jock Stein’s side were still trailing approaching the hour mark. But Stevie Chalmers converted a Tommy Gemmell cross and, with a play-off in Rotterdam looming, Billy McNeill headed a winner in the dying seconds as 75,000 Hoops fans began to believe. Chalmers would go on to hit the winner against Inter Milan in the final as the Lisbon Lions were crowned.
1980 – Celtic 2 Real Madrid 0
McNeill was manager of Celtic when they recorded a European Cup quarter-final victory which sparked memories of their great campaigns under Stein. Right-back Alan Sneddon set up second-half goals for George McCluskey and Johnny Doyle in front of a 67,000 sell-out crowd. McCluskey also had a goal controversially disallowed and the decision was to prove crucial as the Spanish champions won 3-0 in the Bernabeu second leg.
2007 – Celtic 2 AC Milan 1
Parkhead had become a European fortress with the likes of Juventus and Manchester United falling on Champions League visits in previous seasons but few gave Gordon Strachan’s side hope against the European champions. However, Stephen McManus bundled home the opener and Scott McDonald pounced on the rebound to net an 89th-minute winner after the Rossoneri had levelled from the spot. There was more drama to follow as Milan goalkeeper Dida was carried off on a stretcher after being tapped on the head by a Celtic fan who invaded the pitch to celebrate. The Brazilian was later handed a two-match ban for feigning injury.
2012 – Celtic 2 Barcelona 1
Hoops fans celebrated the 125th anniversary of the club’s founding with a victory which matched any result in their glorious history as Neil Lennon’s side stunned one of the greatest teams in the annals of the game. Victor Wanyama headed the opener in the 21st minute and 18-year-old substitute Tony Watt latched on to a long ball to fire a late second. Lionel Messi pulled one back in injury time but it was too little, too late for the visitors, who had won three of the previous six tournaments.
2013 – Celtic 3 Shakhter Karagandy 0
A 2-0 play-off first-leg defeat in Kazakhstan had already sparked a post-mortem on Celtic’s Champions League chances. The Hoops had come back from the same deficit in the past, notably with a 5-0 thrashing of Sporting Lisbon in 1983, but were written off after the loss of Wanyama, Gary Hooper and Kelvin Wilson in the summer. However, goals from Kris Commons and Georgios Samaras brought the tie level and James Forrest slotted home in stoppage time to spark wild celebrations. Lennon said afterwards: “It’s the greatest thing I’ve ever done in football.”