Cagliari have notified Celtic about the fee they require for Adam Obert, a Slovakian international centre-back. Celtic's initial bid of £3 million was turned down because it fell short of Cagliari's £6 million valuation. Transfermarkt currently lists the player's market value at €3.00m. Cagliari, who brought Obert in on a free transfer from Sampdoria in 2021, have him under contract until 2029. The 22-year-old defender has drawn interest from both Celtic and Belgian club Royal Antwerp, underscoring his demand as clubs aim to strengthen their squads in the final month of the summer transfer window.