With dramatic comebacks, an all-English final and moments that will be forever etched in footballing folklore, it was arguably the greatest European season ever.
It also featured some sensational goals, and ahead of the big kick-off on Tuesday 17 September, BTSport.com relives all the very best goals scored during last season's competition.
10. Origi v Barcelona - Semi-final second leg, May 6 2019
Possibly the cheekiest goal in Champions League history, Divock Origi sealed Liverpool’s remarkable semi-final comeback against Barcelona but it was all down to some quick-thinking from Trent Alexander-Arnold.
With his side 3-0 up on the night and level on aggregate, the right back set the ball down to take a corner and began walking away as Barcelona’s backline argued among themselves.
It was a ruse. Alexander-Arnold checked back inside and swung a low cross along the ground, teeing up Origi to thrash home with Barcelona’s shell-shocked defenders left looking foolish.
9. Coutinho v Manchester United - Quarter-final second leg, April 16 2019
Philippe Coutinho’s sumptuous strike saw Barcelona kill off Manchester United’s faint semi-final hopes and issue a timely reminder to supporters at Camp Nou what he is capable of.
Lionel Messi picked out Jordi Alba with a lofted long ball over United’s defence. The full back laid it off for Coutinho, who cut inside before unleashing a curling effort into the top corner from 25 yards out.
David De Gea had dropped a clanger in the first half by allowing Barcelona’s second to squeeze underneath him. He had no chance with this one.
It was a trademark Coutinho strike reminiscent of his Liverpool days and the Brazilian celebrated by sticking his finger in his ears in response to the criticism he’d received.
8. Pavkov v Liverpool - Group Stage Matchday 4, November 6 2018
A famous goal from Milan Pavkov secured a famous victory for Red Star Belgrade and sent a raucous Rajko Mitic Stadium into raptures.
Liverpool, sloppy all evening, surrendered possession in midfield and Pavkov collected the ball midway into the opposition half.
The forward shrugged off Georginio Wijnaldum’s challenge and launched a left-footed piledriver across his body that soared past the outstretched Allison.
Pavkov and Red Star’s second of the night left Liverpool’s hopes of making the knockout stages in serious jeopardy and secured an unforgettable evening for the former European Cup winners.
7. Sane v Schalke - Last-16 first leg, February 20 2018
Just one of the two sensational free-kicks Leroy Sane netted for Manchester City against German opposition this season.
The German’s set-piece on his return to former club Schalke edges his group-stage strike against Hoffenheim due to the importance of the goal.
With City a goal and a man down in their last-16 first leg in Gelsenkirchen, Sane came off the bench to draw the visitors level in spectacular fashion with five minutes remaining.
His left-footed free-kick from 30 yards out thundered into the top corner with a combination of power and swerve before Raheem Sterling’s last-gasp goal sealed the win.
6. Icardi v Tottenham - Group Stage Matchday 1, September 18 2018
A vicious volley from Mauro Icardi sparked a late Inter Milan comeback over Tottenham at the San Siro on the opening match day.
The Inter captain barely had a sniff all night but made his mark sensationally with five minutes remaining in the contest and his side trailing to Christian Eriksen's deflected goal.
Kwadwo Asamoah curled a speculative cross towards the edge of the area and Icardi took full advantage, demonstrating textbook technique to rifle a volley past Michel Vorm and into the bottom corner.
5. Neres v Real Madrid - Last-16 second leg, March 5 2019
The pick of the team goals scored by Ajax’s exciting young team during their run to the Champions League semi-finals came via David Neres at the Bernabeu.
Down 1-0 from the first leg, Ajax quickly set about stunning the holders and their second on the night was a strike Johan Cruyff would have been proud of.
Former Southampton man Dusan Tadic dumbfounded Casemiro with a Maradona turn before slotting in Neres inside the Madrid penalty area.
The Brazilian took a touch and clipped a clever finish over Thibaut Courtois and Ajax were on their way to dumping out the three-time holders at their own home.
4. Mane v Bayern Munich - Last-16 second leg, March 13 2019
Three magical touches from Liverpool’s in-form man Sadio Mane secured a valuable away goal in Munich and put the Reds on course for the quarter-finals.
With Virgil van Dijk in possession deep inside his own half, Mane pointed to where he wanted the Dutchman to play the pass.
Sprinting into Bayern territory Mane plucked the ball out of the sky, deceived the on-rushing Manuel Neuer with a Cruyff turn and clipped a delightful finish into the German’s net on the turn.
It was Mane’s ninth in 10 matches and his first of the evening as Liverpool overcame Bayern 3-1 to seal their spot in the last eight.
3. Ronaldo v Manchester United - Group Stage Matchday 4, November 7 2018
Cristiano Ronaldo came back to haunt Manchester United once again with a thumping volley to send Juventus in front in their group-stage encounter.
Ronaldo darted off the shoulder of the last defender to meet Leonardo Bonucci’s lofted through ball, watching as the pass sailed over his shoulder.
And with a flick of his right foot Ronaldo executed a perfect volley to lash past De Gea and net his first ever Champions League goal for Juventus.
United would recover to defeat Ronaldo’s Juventus on the night but the former Old Trafford favourite left his mark brilliantly on proceedings.
2. Rakitic v Tottenham - Group Stage Matchday 2, October 3 2018
An outrageous volley from Ivan Rakitic that lit up Wembley and paved the way for Barcelona’s 4-2 victory over Tottenham.
After Coutinho’s mis-hit, the Brazilian flicked the ball back towards the edge of the area and his team-mate pounced to thrash home an extraordinary first-time strike.
The ball bounced and Rakitic adjusted himself to get his body over it, sending both his feet off the ground as he powered in off the post and past Hugo Lloris. Amazing technique from the Croatian.
1. Messi v Liverpool - Semi-final first leg, May 1 2019
The pick of the bunch is a stunner even by Messi’s standards as the Barcelona superstar made his 600th club goal a strike to remember.
Barcelona’s supporters drew a collective breath of expectation after Messi was fouled and the forward lined up for a free-kick around 35 yards out from goal. But even by his standards, what followed was ridiculous.
Messi, his head bowed as he approached the ball, curled a pinpoint free-kick that soared into Alisson’s top corner despite the Brazilian’s despairing dive.
It was another otherworldly moment from the game’s very best, even if what followed that week saw the superhuman show himself as human.
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