Bild has learned that Bayer Leverkusen are hot on the trail of Mateo Kovacic and Charles Aranguiz.
Die Werkself saw star midfielder Gonzalo Castro move to Borussia Dortmund and they are now in the market for his replacement.
Chile star Charles Aranguiz was believed to be their primary target, but the problem is that Premier League champions Chelsea are also showing interest.
According to the latest reports, Bayer Leverkusen have turned their attention towards Inter Milan star Mateo Kovacic.
The Nerazzurri might decide to cash in on the Croatian starlet this summer in spite of the fan protests, with the 21-year-old valued at €22 million.
Kovacic has shown a great deal of potential since arriving from Dinamo Zagreb in January 2013, scoring 5 goals in 80 Serie A appearances.
He did struggle for consistency at times, but Inter Milan fans seem to believe he will develop into a world-class player.