Crashing out at the group stage again would be a huge blow to Barcelona's finances, whose perilous state led the club's board to sell a stake in their TV rights and agree to the sale of their audio-visual division.
Hazard joined Chelsea from Lille in 2012 and won the Europa League in 2013 and 2019 with the London club. He also won the Premier League title in 2015 and in 2017 as well as the League Cup and the FA Cup.
City completed the treble of Champions League, Premier League and FA Cup titles, matching Manchester United's feat in 1999 and drawing comparisons with Guardiola's 2008-09 Barcelona team.
Gundogan was Pep Guardiola's first recruit when he took over the reins at City in 2016 despite the German being sidelined with a knee injury when he was signed from Borussia Dortmund.
Atletico Madrid secured a hard-fought 2-1 home victory over Real Betis in La Liga on Sunday thanks to an own-goal by Rui Silva and a header by Alvaro Morata as Diego Simeone's side ended a three-game winless run in all competitions.
Former Barcelona defender Alba to sign for Inter Miami
Real Madrid's Rodrygo struck twice and Jude Bellingham was also on target as the visitors enjoyed a 3-0 win at lowly Cadiz.
Barcelona have reached the semis only once since winning the Champions League in 2014-15.
Marco Asensio and Vinicius Jr. scored second-half goals to earn Real Madrid a solid 2-0 win over struggling Valencia.
Paris St Germain closed out the year on a high as they maintained their five-point advantage at the top of the table.
Barcelona to sign Gundogan on free transfer from Man City
Athletic Bilbao beat Barcelona 4-2 at home to knock them out of the Copa del Rey
'Yesterday, he trained normally, and today he's taken this decision. We have accepted it. I spoke to him this morning, and he said he was leaving, and I understood.'
Re-signed by Atletico, the Frenchman to stay at the club till 2026.
FIFA also announced a newly structured international calendar which its president Gianni Infantino said had been endorsed by the ECA.
Spanish prosecutors last month filed a complaint against Barcelona over payments of 7.3 million euros ($7.95 million) from 2001 to 2018 to firms owned by Jose Maria Enriquez Negreira.
Vinicius Jr scored a hat-trick in the first half as Real Madrid were crowned Spanish Super Cup champions
Messi mania highlights 'epic' year for MLS, Garber says
Sevilla maintained their incredible record in the competition after an otherwise difficult season.
Holders Manchester City will take on RB Leipzig, Red Star Belgrade and Young Boys in Group G.
A round-up of Sunday's matches in LaLiga, Ligue 1 and Serie A
Barca had been trying to sign the 21-year-old right back for $6.5 million in a deal
Nacho left his team mates stunned as he tried to clear a cross in the 13th minute and headed the ball into the net.
Dembele was dropped by manager Xavi Hernandez amid his contract standoff with Barcelona before he returned to the team in February and finished the campaign with 32 appearances in all competitions.
IMAGES from the UEFA Champions League matches played on Wednesday
The agreement, dubbed "LaLiga Boost", buys CVC an 8.2% stake in a new company that will get broadcasting revenues and sponsorship rights for 50 years.
Alvaro Morata scored a brace to help Atletico Madrid deliver a statement performance as they outclassed city rivals Real Madrid.
Luka Modric has signed a one-year contract extension with Real Madrid
Barcelona's Joao Felix scored in the first half to secure a hard-fought 1-0 home win against his valiant parent club Atletico Madrid in a compelling LaLiga clash on Sunday.
Harry Kane scored twice in his first league appearance in front of a home crowd to steer champions Bayern Munich to a 3-1 victory over Augsburg.
Rayo Vallecano came from behind to beat Real Madrid 3-2 on Monday with the champions failing to reclaim top spot in the standings after two consecutive games without a win.
Chelsea outplay Villa in FA Cup
Bayer Leverkusen beat Freiburg 3-2 to edge closer to a first ever Bundesliga title.
Rodrygo and new recruit Jude Bellingham scored first-half goals to give Real Madrid a 2-0 win at Athletic Bilbao to kick off their LaLiga season.
Atletico celebrate anniversary with 3-1 comeback win over Mallorca
Photos from soccer matches played across top European Leagues on Saturday.
When asked about Barcelona's youth and talent in midfield especially, Gundogan said he had a lot to offer the team with his experience.
Real Sociedad will join Atletico Madrid, Real Madrid, and LaLiga champions Barcelona in Europe's elite club competition next season.
Barcelona extended their LaLiga lead to eight points thanks to second-half goals by Jordi Alba, Gavi and Raphinha that gave them a 3-0 home win against Sevilla
Milan missed the chance to jump to second and remained fourth with 48 points