Twelve officers were injured and seven arrests were made during the clashes between police and Legia Warsaw supporters on Thursday.
Galatasaray reached the Europa League knockout stages with a pulsating 4-2 home win over Marseille.
Spartak Moscow boosted their hopes of reaching the Europa League knockout stages with a 2-1 win over Napoli on Wednesday.
West Ham have said the club is "appalled" after footage of fans singing an anti-Semitic song towards a Jewish man circulated online on Thursday.
West Ham United dropped points for the first time in this season's Europa League campaign as a late own goal by Tomas Soucek in a 2-2 draw at Genk.
West Ham United moved closer to the Europa League knockout stage with a 3-0 home win over Genk on Thursday.
Lazio and Marseille drew 0-0 to keep alive their hopes of reaching the Europa League knockout stages, while West Ham moved closer with a win.
Patson Daka scored four goals to inspire Leicester City to a 4-3 comeback win at Spartak Moscow in Europa League Group C on Wednesday.
Sparta Prague hit out at "xenophobic" reports that said Rangers midfielder Glen Kamara was targeted by sections of a crowd of schoolchildren.
Rangers manager Steven Gerrard said he was disappointed but not surprised by reports midfielder Glen Kamara was targeted by sections of a crowd.
West Ham United made it two wins out of two in the Europa League after a 2-0 home victory over Rapid Vienna.
Striker Victor Osimhen scored a second-half brace as Napoli fought back to earn a 2-2 draw at Leicester City in a pulsating Europa League draw.
West Ham began their Europa League campaign with a 2-0 win at Dinamo Zagreb in Group H action.
The Europa League draw brought up a number of intriguing ties with Lazio, Galatasaray and Marseille included in the same group.
Al Nassr have strengthened ahead of the resumption of the AFC Champions League campaign with the signing of Europa League winner Ramiro Funes Mori.
The next four Champions League finals from 2022-2025 will be hosted by Saint Petersburg, Istanbul, London and Munich.
The 2021-22 European season should be back to normal format. Here's when the campaign will get going across the top competitions.
UEFA announced on Thursday that the away goals rule has been abolished in European tournament knockout ties from the 2021-22 season.
How did Nigeria's players rate in Europe this season? Colin Udoh assesses the Super Eagles' efforts in the wake of most leagues drawing to a close.
Marcus Rashford has said that most of the Manchester United team played the Europa League final while carrying injuries.
Villarreal clinched their first ever trophy, defeating Man United after 11th rounds of penalties in the Europa League final.
Man Utd's Marcus Rashford said he been subjected to "at least 70 racial slurs" on social media following Wednesday's Europa League final defeat.
Here are the best numbers from the final of the UEFA Europa League.
Ole Gunnar Solskjaer is still trophyless as Man United boss after Wednesday's Europa League final loss. Two years into the job, he needs to deliver.
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|Red Star Belgrade||5||3||1||1||+2||10|
|West Ham United||5||4||1||0||+9||13|