Leicester later signed Freiburg defender Caglar Soyuncu on a five-year contract, subject to a work permit being granted.
The Turkey international has made 15 appearances for his national side.
Striker Danny Ings has joined Southampton on a season-long loan which will be made permanent at the end of the 2018-19 season.
Crystal Palace have announced the signing of forward Jordan Ayew on a season-long loan from Swansea.
Tottenham have become the first team in Premier League history not to make a summer signing since the transfer window's inception in 2003