Xavi’s rescue mission encounters its first major test on Tuesday as Barcelona face Benfica in a game that could decide the scrap in Group E to qualify for the Champions League last 16.
The last time Barcelona failed to reach the knock-out stage of the Champions League was in 2003.
The 25-year-old, who won the 2018 World Cup with France, appeared in a Madrid court on Monday - a day earlier than planned - with a six-months prison sentence hanging over him.
After losing 3-0 to both Bayern Munich and Benfica, Barca sit bottom of Group E with two games against Kiev up next, the first at Camp Nou on Wednesday.
Club president Joan Laporta will hold a meeting on Thursday morning, according to reports in the Catalan press, in which it will be decided whether Koeman should remain in charge for Saturday’s crunch LaLiga game against Atletico Madrid.
Ronald Koeman's Barcelona side already look at real risk of an early exit from this season's Champions League after suffering a second 3-0 defeat in as many games in Group E and finishing the match in Lisbon with 10 men.
Here's all you need to know about the Matchday 2 of UEFA Champions League on Wednesday.
Benfica defender Lucas Verissimo was sent off in the 32nd minute and the two-time European champion held out with a veteran back-line pairing of captain Nicolas Otamendi and Jan Vertonghen.
Champions League: Benfica beat Spartak Moscow 2-0 in first leg of qualifiers to move closer to play-offs
Dynamo Zagreb conceded an 82nd minute equaliser at home to Legia Warsaw in a 1-1 draw to hand the initiative to the Poles in next week's return leg.
Portuguese giants Benfica confirm resignation of long-standing president Luis Filipe Viera following arrest
Last Friday, Vieira had announced he would stand down temporarily after being questioned by an investigating judge at the Lisbon court as part of operation 'Red Card'.
With Arsenal sitting in mid-table in the Premier League, this competition presents the only viable route into next season's Champions League for Arteta's team.
Europa League: Arsenal-Benfica round of 32 tie shifted to Greece due to COVID-19 restrictions in England
The game will be played at the Georgios Karaiskakis stadium of Olympiakos at 17:55 GMT. The move comes after the first leg of the last 32 tie on 18 February had already been switched from Lisbon to the Stadio Olimpico in Rome.
Vertonghen briefly tried to play on after an aerial collision involving teammate Toby Alderweireld and Ajax goalkeeper Andre Onana, but he soon had to be helped from the field and was seen vomiting on the pitch.
United will play away first against Sociedad, which has been inspired this season by former Manchester City playmaker David Silva’s homecoming to Spain.
The Portuguese general prosecutor's office revealed that it had carried out nearly 30 searches, including at the premises of Benfica and fellow top division club Santa Clara, in a probe into a range of financial crimes including money laundering.
Europa League: Yusuf Yazici nets hat-trick as Lille stun AC Milan; Arsenal, Leicester City and Tottenham win
Yazici's goals put Lille, who are unbeaten in all competitions this season, one point ahead of Milan who lost for the first time since football returned from the first coronavirus lockdown.
City did not disclose financial details but Benfica had already announced on Sunday that it was selling Dias to the Premier League club for €68 million ($78 million).
Premier League: Manchester City agree deal to sign Benfica's Ruben Dias, Nicolas Otamendi to go other way
Manchester City boss Pep Guardiola will see Ruben Dias as the missing piece in his defensive jigsaw, with the need for reinforcements accentuated by Sunday's shock 5-2 home defeat by Leicester City.
It is the 18th straight season that either Benfica or Porto win the Portuguese league. Sporting Lisbon, third in the standings this season, won the title in 2001-02.
The victory leaves Benfica on 71 points after 32 games, five behind leaders Porto.