RB Leipzig are set to secure the signing of a future replacement for centre-back Dayot Upamecano.
The 21-year-old is highly rated around Europe and is wanted by the likes of Manchester United and Barcelona.
Real Madrid and Arsenal are also reportedly keen.
And according to Sportske, Leipzig are close to signing Dinamo Zagreb's Josko Gvardiol.
A fee of £17 million is agreed, and the player should sign in the coming days.
It would open up the chances for Upamecano to leave, but that may not happen until next summer.
He will have a buyout clause in his contract next summer, but there is none for this transfer window.