Manchester City have signed centre-back Manuel Akanji from Borussia Dortmund on a five-year contract.
City agreed a deal worth just over £15m with Dortmund on Wednesday to sign defender Akanji ahead of the transfer deadline.
Swiss international Akanji had entered the final year of his contract and was yet to make an appearance for Dortmund this season. In total, he has played 158 times for the Bundesliga club since joining from Basel in 2018.
The Premier League title holders have struggled with defensive injuries this season, with Aymeric Laporte absent until September as he recovers from knee surgery, while Nathan Ake was taken off during their 3-3 draw at Newcastle on August 21.
City have already signed Erling Haaland, Stefan Ortega, Kalvin Phillips and Sergio Gomez this summer for a combined total of more than £100m.
Akanji moved to Dortmund from Basel in 2018 and quickly established himself as a first-team regular. He made 36 appearances in all competitions last term.
But the 27-year-old has been pushed down the pecking order at Dortmund with the summer arrivals of Niklas Sule from Bayern Munich and Nico Schlotterbeck from Freiburg.