Copa del Rey: Martin Braithwaite scores winner as Barcelona beat Sevilla in extra-time, progress to final
Barcelona will face either Athletic Bilbao or Levante, who are 1-1 in their semi-final, in the final on 17 April in Seville.
Reports surfaced in Spain this week claiming presidential candidate Joan Laporta was eyeing a move for Gunners boss Arteta if he won the race to return to Barca.
Barcelona had won their previous seven games and another victory would have put them back within touching distance of Atletico, even if LaLiga's leaders have played one game fewer.
Defeat to PSG was a reality check for Koeman's Barca, a brutal assessment of where they are in their recovery and a measuring of the distance still to be covered before they can rejoin Europe's elite.
Clear underdogs when the draw was made in December and paired them with PSG, Barcelona may now even have the edge as their opponents arrive in Catalonia without the injured Neymar and Angel di Maria.
Copa del Rey: Jules Kounde, Ivan Rakitic score as Sevilla's first leg win leaves Barcelona with mountain to climb
Barcelona's hopes of winning the Copa del Rey this season are now left hanging by a thread.
LaLiga: Lionel Messi stars in Barcelona's 3-2 comeback win over Real Betis; Real Sociedad ease past Cadiz
Messi showed why Barcelona agreed to keep him an extremely rich man when on Sunday he acted as Ronald Koeman’s super-sub, scoring one goal and setting up another to help Barcelona earn a 3-2 win at Real Betis.
When the transfer window closed on Monday, Real Madrid didn't sign for a second straight window while Barcelona's Ronald Koeman was told the club could not find even three million euros for a central defender
Barcelona join Sevilla, who beat Almeria on Tuesday, and Levante, who also came through after extra-time for a surprise 1-0 win against Villarreal
The pandemic has shaken football. Even one of the world's most valuable teams such as Liverpool is not immune to the impact of empty stadiums draining the business of cash.
LaLiga: Luis Suarez brace takes Atletico Madrid 10 points clear; Barcelona level with Real Madrid in second
Antoine Griezmann also scored for Barcelona, who won their fifth in a row in the league and moved into second place for the first time this season.
Copa del Rey: Ronald Koeman recalls Lionel Messi for Rayo Vallecano trip and asks players to ignore Barca's money woes
Koeman has recalled Lionel Messi to the squad for Wednesday's round-of-16 trip to second-division Rayo after a two-match ban for a red card in the Spanish Super Cup final loss.
Goals from Ousmane Dembele and Martin Braithwaite in extra time sealed a 2-0 victory for Barca but only after Miralem Pjanic and Dembele had both failed to score penalties in normal time.
Messi is the club's leading scorer this season with 14 goals in all competitions, his return to form of late coinciding with Barca's nine-game unbeaten run after a poor start under Koeman.
Barcelona trailed to an early Inaki Williams strike but responded with a slick attacking performance that had Lionel Messi at the heart of it.
Barca face Athletic Bilbao on Wednesday, looking to reduce their 10-point gap behind La Liga leaders Atletico Madrid, who have also played one game fewer than the Catalans.
The 28-year-old Brazilian required the operation to mend a torn meniscus after he limped off the pitch late in Tuesday's home draw with Eibar.
It was the 33-year-old Messi's 749th competitive match for Barca, meaning he has scored a goal every 1.16 games.
Messi headed in from Jordi Alba's cross after his first-half penalty was saved to equal the mark set by the Brazilian great for Santos.
Barcelona defender Jordi Alba scored one goal and set up another to spark a 2-1 comeback victory over Real Sociedad, depriving the Basque Country side of the Spanish league lead.