Pep Guadiola moved fast to overcome his disappointment in losing out on Dani Alves by agreeing terms with Tottenham Hotspur to buy Kyle Walker for £55 million.
The deal – £50m plus about £5m in add-on incentives – makes flying wing back Walker the most expensive defender in football history.
Alves, the Brazilian defender, worked under Pep at Barcelona and had been expected to follow him to Manchester but instead joined Paris St Germain.
City has been looking to bolster its rearguard after veterans Pablo Zabaleta, Bacary Sagna and Gael Clichy were all released at the end of last season.
Walker made 183 Premier League appearances for Spurs and he has won 27 England caps.
The defender, selected in the 2016-17 Premier League team of the year, will become City’s third signing of the summer, after the arrivals of midfielder Bernardo Silva and goalkeeper Ederson Moraes.
Walker, 27, is expected to join up with the rest of the City squad for next week’s tour to the United States.
Following Walker’s departure, Spurs are likely to give 26-year-old Kieran Trippier, who made his full England debut against France last month, an extended run in the side.
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