Petko Hristov is currently the captain and a key defensive player for Spezia. There is interest from two unidentified Serie A clubs, but Hristov has expressed his desire to prioritize staying with Spezia, even if it means rejecting offers from higher categories. There is a unilateral release clause in his contract valued at 4 million euros, but this option is considered hypothetical due to Hristov's commitment to Spezia. Transfermarkt currently estimates his market value at 4.00 million euros.