The Croatia international was the subject of a bid from Tianjin Quanjian last year but opted to stay in Turin and has once again attracted a lucrative offer from the Chinese Super League.
Coached by Manuel Pellegrini, Fortune already boast ex-Napoli star Ezequiel Lavezzi and former Roma and Arsenal attacker Gervinho in their squad and are hoping to push for the league title after this year's fourth-place finish.
The Chinese side have already signed one player from Juve, having lured Brazilian midfielder Hernanes to the Hebei province in February, and they see Mandzukic as an ideal import ahead of next year's campaign.
They have approached him through intermediaries but, despite the money they have to offer, the ex-Bayern Munich forward has no interest in making the switch.
The 31-year-old, who joined Juve from Atletico Madrid in 2015, is highly rated by coach Massimiliano Allegri and is contracted to the Italian champions until 2020.