Chelsea and Barclona are plotting a move for the elusive Juventus midfielder, according to Tuttosport.
But the Italian publication are reporting that the Serie A champions will demand at least €80m if either club make an approach to sign the Bosnian international.
Barcelona are scouring the market for a replacement for Andres Iniesta, while Chelsea are looking to bolster their midfield under imminent new boss Maurizio Sarri.
Both clubs will push hard to sign the 28-year-old, but Juve will be desperate to hold on to their prized asset.