Chelsea have made a £35.6 million bid for Juventus defender Mattia Caldara.
Italian media outlet Corriere della Sera has claimed that the Blues made the offer after failing to reach an agreement over the transfer of his teammate Daniele Rugani.
Caldara made his senior debut for Atalanta as a second-half substitute in a Serie A match against Catania in May 2014.
He subsequently played for Trapani and Cesena on loan, before returning to his parent club in 2016.
Caldara quickly established himself in the first-team and his form soon drew plenty of interest from Juve.