Bernardo Silva and Jack Grealish scored three minutes apart as Manchester City came from behind to beat Premier League newcomers Luton Town.
Paris St Germain will play Borussia Dortmund and Barcelona were pitted against an unpredictable Napoli, while Chelsea were drawn against Bayern Munich. City, who will be at home in the second leg, have yet to beat the Spanish side with two draws and two defeats in their previous four meetings.
England's Liverpool FC and Spanish champions Real Madrid will face off in the final in Paris.
An off-key Liverpool were frustrated for a second successive game by struggling opponents as they were held to a 0-0 Premier League draw at Newcastle United on Wednesday.
News of all that's transpired on and off the football field.
News of all that's transpired on and off the football field
Al-Hilal wrapped up a place in the Asian Champions League semi-finals as a 2-0 win over fellow Saudi Pro League side Al-Ittihad in Jeddah on Tuesday completed a 4-0 aggregate success and set a world record with their 28th straight win in all competitions.
Images from the UEFA Champions League matches played on Tuesday.
Leicester keeper Schmeichel defends under-fire De Gea
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Spanish second division side Rayo Vallecano refused to turn up for the first day of group training due to a dispute with the club hierarchy over a pay cut for staff and players, a club source said on Monday.
News of all that's transpired on and off the football field.
Russian owner Abramovich put the club up for sale in early March following Russia's invasion of Ukraine, which Moscow calls a "special military operation". Sanctions on Abramovich had also complicated the sale process.
Messi, whose deal expires in 2021, had called his side "weak" and "inconsistent" after they lost the league title to Real Madrid.
Manchester United have signed Leicester City's England centre back Harry Maguire on a six-year contract, the Manchester club announced on Monday.
The much anticipated announcement came after Kuyt captained his club to an emotional title victory with a 3-1 win over Heracles Almelo, and he led fevered celebrations in front of some 150,000 people in Rotterdam on Monday.
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The last three league meetings between the two sides, including October's game at Anfield, have ended in draws but Lovren said Liverpool were intent on coming away with all three points on Saturday.
Juergen Klopp could not find a more fitting club to take his successful coaching career to the next level. Take a look why...
Spartak Moscow have warned their fans to refrain from violent behaviour when they travel to support their club in a crucial Champions League encounter against Liverpool on Wednesday.
News of all that's transpired on and off the football field
News of all that's transpired on and off the football field
This and more from the happenings in the world of footbal.
English soccer player Adam Johnson, who was sacked by Premier League club Sunderland last month, was facing jail after being found guilty on Wednesday of sexual activity with a 15-year-old girl.
News of all that transpired on and off the football field.
News of all that's transpired on and off the football field
News of all that's transpired on and off the football field.
News of all that's transpired on and off the football field
News of all that's transpired on and off the football field
This and more from the happenings in the world of football
Holders Manchester City were eliminated from the League Cup by West Ham United after a penalty shootout at London Stadium on Wednesday, ending Pep Guardiola's team's four-year domination of the competition.
Summary of all that transpired on and off the football field
Juergen Klopp's side, chasing their maiden title in the Premier League era and first in the top flight in 30 years, took a 14th-minute lead from a Virgil van Dijk header but had to wait until stoppage time to put the game to bed through Mohamed Salah.
Zinedine Zidane has been reappointed as Real Madrid coach nine months after resigning, replacing Argentine Santiago Solari.
English Premier League leaders Manchester City and Chelsea slugged out a magnificent 4-4 draw at Stamford Bridge.
Liverpool's Sadio Mane marked his return from injury with a late goal to break Norwich City's resistance and secure a 1-0 win on Saturday to extend his side's Premier League lead to 25 points.
News of all that's transpired on and off the football field.
A stunning strike from Jordan Henderson helped Liverpool secure a comfortable 2-1 win at Chelsea on Friday that ended the London club's unbeaten start to the season and underlined the growing potential of Juergen Klopp's side.
News of all that's transpired on and off the football field