Ozan kabak joins Liverpool until the end of the season, with the club also having signed Preston North End’s Ben Davies for £2m.
Davies has also signed a long term deal with red at Anfield.
Liverpool have an option to buy Kabak for £18m – with add-on clauses – at the end of the season, but do not need to activate it until June.
For now, they will pay a £1m loan fee now with the potential for an extra £500,000 based on games played and how they fare in the Champions League.
The Reds are missing experienced centre-backs, with Joel Matip out for the rest of the season and Virgil van Dijk and Joe Gomez out with long-term injuries, while midfielder Fabinho, who has been standing in at the back, is also out.
Manager Jurgen Klopp named his 12th different centre-half partnership in 21 Premier League games for Sunday’s 3-1 win at West Ham, with midfielder Jordan Henderson alongside Nathaniel Phillips.
On Davies arrival Klopp said
It’s probably clear that in a normal transfer window, without any issues, we would not look at Preston [to see] if there’s a player for us or something like that.
Since our situation got clearer and clearer – the problems we had – when we saw him we got really excited about it and thought: Wow.
We see the quality and we see the potential as well because he’s 25 and there’s a lot to come for him.
Kabak was recommended by former Huddersfield Town manager David Wagner, who coached him at Schalke and worked with Liverpool boss Klopp at fellow Bundesliga side Borussia Dortmund.
Before joining Schalke, Kabak played for Stuttgart and won the German top flight’s Rookie of the Year award for the 2018-19 season despite the club being relegated
Kabak, whose idol is Van Dijk, has played 14 times for Schalke this season, although the club are bottom of the table with the worst defensive record in the league.
Liverpool were linked with the Turk last summer after the departure of Dejan Lovren.