Chelsea have completed the signing of Antonio Rudiger from Roma for a reported £34 million.
The centre-back had been linked with a move to Stamford Bridge last year and the Blues reignited their interest this summer, agreeing a fee with the Serie A side last week.
Rudiger spent two seasons at Roma after joining from Stuttgart, and made 26 Serie A appearances in 2016-17 as they finished second to Juventus, and he has now signed a five-year deal at the Blues.
He had been contracted to Roma until 2020, but has opted for a switch to the Premier League, becoming the Blues's second summer signing following the arrival of goalkeeper Willy Caballero.
"It’s a great feeling because not every player has the opportunity to join a huge club like this," he told the club's official website.
"I am looking forward to meeting up with my new team-mates and I’m very proud to officially become a Chelsea player."
The 24-year-old adds to Antonio Conte's defensive options after the departure of John Terry, now with Aston Villa, and Nathan Ake, sold to Bournemouth for £20m.
Part of Germany's Confederations Cup winning team, Rudiger has made 17 appearances for the national team.