Benjamin Mendy has completed his £52m transfer from Monaco to Manchester City to become the world's most expensive defender.
The 23-year-old France left-back has signed a five-year deal with the club.
Mendy is City's fifth major signing of the summer and takes their spending to more than £200m.
"He is undoubtedly one of the world's best full-backs, our number one target in this position," said director of football Txiki Begiristain.
Mendy played 34 times for Monaco last season and helped them to their first Ligue 1 title in 17 years after joining them from Marseille last summer.
He is the Premier League club's fifth major signing of the summer following the recruitment of England right-back Kyle Walker for £45m, plus a potential £5m of add-ons, Portugal midfielder Bernardo Silva (£43m), Brazilian keeper Ederson Moraes (£35m) and defender Danilo from Real Madrid (£26.5m).
They have sold left-back Aleksandar Kolarov, 31, to Roma for £4.5m.
Who is Benjamin Mendy?
- Born in Longjumeau - a suburb of Paris
- Signed for Monaco in June 2016 for a reported £11m
- Has made four appearances for senior side
- Has represented France's youth sides (under-16, 17, 18, 19 and 21)
City's lavish spending on defence
The arrival of Mendy leaves Manchester City with the most expensive defensive line-up in world football.
When Ederson moved to the club from Benfica earlier this summer, his move was a world record for a keeper in sterling, although not in euros.
Mendy and Walker have been added to a backline which also includes centre-back John Stones, who was bought for £47.5m from Everton last summer,with the trio making up three of the world's five most expensive defenders.
Central defenders Nicolas Otamendi and Eliaquim Mangala, who spent last season on loan at Valencia, also joined City for fees believed to be in the region of £32m.
Monaco lose another player
Monaco beat Paris-St Germain to the French title last season and also reached the Champions League semi-finals.
Their players have subsequently been in demand and Mendy's departure is the Ligue 1 side's third major departure so far this summer.
Silva and Mendy have both joined City, while Chelsea have signed midfielder Tiemoue Bakayoko from them.
They could yet lose more players, with striker Kylian Mbappe, winger Thomas Lemar and defender Fabinho being linked with moves.
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