Ayoub El Kaabi was the hero as Olympiacos won their first major European honour in history as they snatched a dramatic 1-0 extra-time victory over Fiorentina in the Europa Conference League final.

After nothing could separate the sides inside 90 minutes, talisman El Kaabi scored a 116th-minute winner at the AEK Arena as they became the first Greek side to win a major European competition.

Once again, Fiorentina fell at the final hurdle of this competition, with La Viola also losing out to West Ham in the Prague showpiece last season.

However, the success belonged to Olympiacos and head coach Jose Luis Mendilibar, who secured continental glory in successive seasons following his Europa League triumph with Sevilla this time last year.

Daniel Podence tested Pietro Terracciano early on before Fiorentina thought they had opened the scoring just nine minutes into the final.

Cristiano Biraghi's cross crept into Konstantinos Tzolakis' bottom-right corner, but Nikola Milenkovic was ruled offside for his position in front of the Olympiacos goalkeeper.

Despite their celebrations being cut short, Fiorentina continued with the greater attacking impetus throughout the first half.

Yet La Viola's dominance paid little dividends as Giacomo Bonaventura – their scorer in last season’s final defeat to West Ham – wasted the best chance, shooting straight at Tzolakis from close range after 21 minutes.

Opportunities remained elusive after the break but Fiorentina again went close in the 69th minute as Dodo found Christian Kouame, whose scuffed effort was pushed away by Tzolakis.

Olympiacos almost struck 11 minutes later when Francisco Ortega's free-kick was met by Iborra, but the 36-year-old's header missed the inside Terracciano's right-hand post as the final headed for extra-time.

Mendilibar had earlier introduced former Fiorentina striker Stevan Jovetic, who almost came back to haunt his old club in the 96th minute, when cutting inside before fizzing a strike that Terracciano tipped away.

A penalty shoot-out appeared likely when Tzolakis denied Jonathan Ikone, until El Kaabi ghosted in to nod home Santiago Hezze's cross with just four minutes remaining and send Olympiacos' fans into ecstasy after a lengthy VAR check for offside in Athens.

Lucas Beltran was Fiorentina's hero as his late penalty in a 1-1 draw with Club Brugge ensured they progressed to the Europa Conference League final.

Beltran held his nerve from the spot to score an 85th-minute equaliser, earning a draw on the night but a 4-3 aggregate victory.

Fiorentina won the first leg 3-2, but Hans Vanaken's 20th-minute opener levelled the tie, on Wednesday.

Christian Kouame hit the woodwork twice for Fiorentina, but the pressure finally told when Brandon Mechele caught M'Bala Nzola with a high boot.

Beltran made no mistake, with Fiorentina holding firm to seal their place in the final in Athens on May 29.

Fiorentina lost last season's final to West Ham, and the Serie A club will now face either Olympiacos or Aston Villa.

Data Debrief: Back-to-back finals for Viola

Fiorentina have reached a European final for the sixth time in their history, and the second time in a row, though they have only won one of their previous five attempts.

They have only achieved that feat once before, which was back in 1961 and 1962.

Juventus manager Massimiliano Allegri is happy for Juventus to continue their progress under the radar.

The Turin club are firmly in the Serie A title hunt after a strong start to the season as they bid to make a return to European qualification, having been excluded from this year’s Europa Conference League over breaches of UEFA’s financial fair play rules.

Juventus travel to Fiorentina on Sunday night bidding for a fourth straight win and Allegri is pleased with their progress.

“We must work on our weaknesses and become rock solid,” Allegri told his pre-match press conference.

“We’re on the right track but we’ve only played 10 games and that’s not enough to achieve our goal of qualifying for next year’s Champions League.

“As I said, the important thing is working hard to grow and improve to become a rock-solid team. We need to be more precise and efficient in front of goal as well as improving our defence because things can go wrong very quickly in football.

“It takes balance. We have to remain solid throughout the season because we’ve got a goal to achieve.

“Low profile, less talk and more graft.”

After an impressive start to the campaign, Fiorentina’s form has tailed off a touch having lost their last two matches without scoring.

But Allegri is wary of the threat posed by the hosts, with Nicolas Gonzalez a particular challenge to Juventus having scored five goals in nine matches.

“It’s a big game tomorrow because there’s always been great rivalry between Juve and Fiorentina,” Allegri added.

“They’re an excellent side even though they’re coming in off the back of two league defeats. They like to attack and play good football.

“We’re going to need a big performance if we want to come away with a good result. I consider Fiorentina one of the best-equipped teams of the season because they have lots of great players both technically and physically.

“They will be fighting for a place in the top four. This year Fiorentina have got a great squad.

“They have a striker like Nico Gonzalez, two centre-forwards with Christian Kouame on the left and Giacomo Bonaventura who’s doing big things. Arthur has also recovered from injury and is doing well.”

Former Everton striker Moise Kean has yet to score this season in nine appearances for Juventus and Italy but Allegri praised the 23-year-old’s growth and told all his attackers that they need to contribute.

“Kean is in a great place. He’s grown both physically and technically and his mentality has improved no end. I’m happy with him but he must keep improving,” Allegri added.

“All five of our forwards are in good form. (Federico) Chiesa and (Dusan) Vlahovic know they need to contribute to the good of the team, just like the rest of the group because everyone is important.”