Manchester City have completed the signing of Joao Cancelo, with Danilo heading to Juventus in part-exchange.
The Premier League champions have also paid a further £27.4m for the Portugal international.
Pep Guardiola has been eager to strengthen his options at right back, despite handing Kyle Walker a two-year contract extension this summer.
Cancelo is expected to provide sterner competition to the England international and will be given the opportunity to establish himself himself as first choice.
"City are a fantastic club, with a brilliant manager and I am delighted to be here,” Cancelo told the club website. “Everything about them has impressed me, from the facilities, to their style of play.
“I am always looking to develop my game and win trophies and I believe I can do that here, so now I’m really looking forward to the new season and testing myself in the Premier League."
Guardiola has already strengthened his domestic treble winners with the club record £62m signing of Rodri and left back Angelino.
He has also been on the lookout for extra cover in the centre of defence – targeting Harry Maguire before the England defender joined United in an £80m deal on Monday.
Vincent Kompany’s departure at the end of last season has weakened City at the back, while Nicolas Otamendi’s future has also been the subject of uncertainty.
But going in the final week of the window, City were still to receive any bids for the Argentine – and Guardiola is also confident Fernandinho will be able to step in at centre back if he fails to bring someone in before Thursday’s deadline.
