Riccardo Orsolini is worth at least €70 million (£59 million/$76 million) amid reported interest from Juventus, according to Bologna sporting director Walter Sabatini.
Orsolini, 23, joined Bologna on loan from Juve in January 2018 before that move was made permanent ahead of this season.
The attacker has scored seven goals and provided four assists in 23 Serie A games this season, leading to reports Juve may be interested in bringing him back to Turin.
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Orsolini never made a senior appearance during his time with Juventus after joining the Serie A champions from Serie B side Ascoli in January 2017.