3. Age
Being just 21, Çalhanoğlu’s value is expected to continue to rise. The former HSV playmakers value has risen from €700,000, to €3 million to €22.45 (transfermarkt.com) million in just two years.
Bayer Leverkusen signed Çalhanoğlu for €18 million at the start of the season and are unlikely to let him go for anything under €25 million.
