Manchester City completes the signing of 23-year old Ruben Dias in a deal worth €68 million.
The Portuguese international joins the Etihad on a six-year contract that will tie him at the club until 2026.
He made 137 appearances for Benfica in a four-year spell, also winning the Portuguese Liga title in 2018-19.
Manchester City defender Nicolas Otamendi goes the other way in a separate deal worth €15m.
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“Ruben is a player we have admired for some time and we have been impressed with how he has progressed at Benfica. He has developed into a real leader and as a defender, he has all the attributes we are looking for,” director of football Txiki Begiristain said in City’s statement.
“He is strong in the air, good in one-v-one situations and technically he is very good, so we are confident he can thrive in our system.”
Dias added: “To have the opportunity to join a club like Manchester City is a fantastic opportunity for me and one I couldn’t turn down.
“It is really exciting to be part of such a talented squad and to play for a world class manager like Pep Guardiola, who has a proven track record of developing young players like myself.”