Holders Barcelona suffered a stunning 2-1 home defeat by Russia's Rubin Kazan while Liverpool lost by the same score to Olympique Lyon at Anfield on a night of high drama and late goals in the Champions League on Tuesday.
Arsenal beat Villarreal on a 1-0 aggregate after the second leg semi-final ended goalless.
Five-times winners Liverpool were knocked out of the Champions League in the group stages despite a 1-0 win at Debrecen on Tuesday while Fiorentina and Arsenal qualified for the last 16.
The Londoners are fourth in the Premier League table, 13 points behind leaders Leicester City with five games left.
Images from action in the Spanish Super Cup and English Premier League
Ten-man Premier League leaders Leicester City lost at title-chasing Arsenal, while La Liga pacesetters Barcelona crushed Celta Vigo and Juventus took over from Napoli at the top of Serie A by edging their rivals.
If Aubameyang's transfer to Chelsea goes through, he would return to the English top flight after seven months, having played for Chelsea's London rivals Arsenal for four years.
Pep Guardiola claimed his maiden English silverware as his side thrashed Arsenal 3-0 in the League Cup final with Sergio Aguero, Vincent Kompany and David Silva all on target in a disappointingly one-sided showpiece on Sunday.
Arsene Wenger has agreed a new three-year deal to remain as Arsenal manager.
Manchester City's Premier League home match against Arsenal has been postponed because players from the London club have had contact with the owner of Greek side Olympiakos Piraeus, who has contracted the coronavirus. Meanwhile La Liga matches will be played without fans for at least the next two rounds of fixtures to try to stop the spread of the coronavirus, the Spanish league said.
Chelsea beat Eintracht Frankfurt on penalties on Thursday to set up an all-English Europa League final with local rivals Arsenal in Baku on May 29.
Chelsea wrapped up their pre-season tour of the United States on a high note by beating Barcelona in a shootout after their International Champions Cup match ended 2-2 on Tuesday.
Seven-time European champions AC Milan will face Arsenal in the standout last-16 tie in the Europa League after the draw was made in Nyon, Switzerland on Friday.
Barcelona suffered their first league defeat of the season when they went down 1-0 at Athletic Bilbao while Arsenal stayed clear at the head of the Premier League.
A round-up of the soccer matches played accross Europe over the weekend.
I'll never find the affection I was shown at Arsenal, Thierry Henry told Sky Television.
Arsenal captain Cesc Fabregas has said he was happy at the Premier League club and no decision had been made about a possible move.
Thierry Henry scored the winner on his Barcelona debut on Thursday when the Spanish side beat Dundee United 1-0 in a pre-season friendly at Tannadice.
Henry, who started out playing for Monaco and went on to enjoy a stellar club career with Arsenal and Barcelona, has been working as assistant coach for the Belgian national team but has never been in charge of a team in his own right.
Manchester City withdrew from the battle to secure the services of Arsenal's Chilean forward Alexis Sanchez, leaving Jose Mourinho's Manchester United as the most likely destination for the 29-year-old.
Arsenal captain Thierry Henry says he will decide his future before the World Cup in Germany
Holders Arsenal's long unbeaten run in the FA Cup continued but they were frustrated by stubborn Championship leaders Hull City on Saturday, drawing 0-0 in a dreary fifth-round tie at the Emirates Stadium.
Barcelona are concerned about the financial clout of the Premier League when the new English television deal kicks in for top-flight clubs next season, said president Josep Maria Bartomeu.
Arsenal and Manchester City face monumental tasks when they visit European powerhouses Bayern Munich and Barcelona looking to overturn 2-0 deficits in the second legs of their Champions League last-16 ties.
Cesc Fabregas is torn between staying with Arsenal or moving back to Barcelona and has said he is still in real doubt over where his future lies.
Manager Arsene Wenger wants Arsenal to reinforce their title credentials by beating Manchester City in the Premier League on Sunday and called on his players to show no fear at the Etihad Stadium.
Arsenal will have another chance to beat Bayern Munich in a Champions League knockout tie after the sides were paired in the round of 16 following Monday's draw. The teams met in the knockout stages in 2005, 2013 and 2014 with the German champions winning on all three occasions. Bayern, who finished as runners-up in their group, will host the first leg.
Arsenal clawed back from a two-goal deficit to draw 2-2 with Barcelona on Wednesday in a rip-roaring Champions League quarter-final first leg at the Emirates.
After Manchester took top billing in the Champions league on Tuesday it was London's turn on Wednesday when Chelsea and Arsenal recorded impressive, though contrasting, victories as the Premier League again flexed its muscles.
Chile showed more attacking flair but failed to execute the crucial final pass in a first half marred by injuries, with Peru's Luis Advincula subbed off in the 35th minute and Chilean midfielder Diego Valdes being replaced at half-time.
Having finally treated their long-empty trophy cabinet to some FA Cup silverware last season, Arsenal have splashed the cash ahead of the new Premier League campaign to improve a squad that could now be capable of pushing for loftier titles.
Arsenal skipper Cesc Fabregas has admitted that he only stayed back at the club because he was given no choice.
IMAGES from the UEFA Champions League matches played on Wednesday.
Favourites Barcelona will meet Benfica in the quarter-finals of the UEFA Champions League.
Arsenal can cut down the deficit to Premier League leaders Manchester City and challenge for the title this campaign, midfielder Granit Xhaka said.
Lionel Messi fired Barcelona into the last 16 of the Champions League with two goals in their 3-0 victory at Spartak Moscow on Tuesday but holders Chelsea are walking a tightrope after a crushing defeat by Juventus.
Mesut Ozil guided Arsenal to a 2-0 victory over Napoli while a late Cesc Fabregas header gave Barcelona a laboured 1-0 win at 10-man Celtic in the Champions League on Tuesday.
Barcelona's Luis Suarez hit a brace and set up a double for a spritely Lionel Messi to score in his first start after injury in a rampant 6-1 Champions League victory over AS Roma on Tuesday.
