Torino president Urbano Cairo would insert a €150 million buy-out clause in Andrea Belotti's contract if they were to renegotiate now.
The much-coveted striker signed a deal with Torino until June 2021 earlier this season, containing a €100m exit clause for teams outside Italy.
But Cairo feels he is now worth even more following his eight-minute hat-trick in the 3-1 win over Palermo on Sunday.
"If I had to insert a figure in his contract right now I would go for €150 million," Cairo told Sky Sport.
"He scored three more crazy goals, one even better than the other.
"We will have to wait and see whether a team is willing to pay €100 million. I hope not because I want to keep him here. We are just enjoying him and his goals for now."
Belotti, 23, took his tally for 2016-17 to 22 goals in 24 Serie A outings with his treble and head coach Sinisa Mihajlovic was understandably pleased with his striker's showing.
"He put in an extraordinary performance," said the Torino boss.
"He was fighting like always, creating chances and scored three goals. He is the league's top scorer right now and the best striker in Serie A for me. He still has room for improvement, though, and cannot afford to relax. Everything will be fine if he continues like this, he is a humble guy.
"Maybe the president should revise his buy-out clause, because €100 million is not a lot for him. He can become a point of reference, also for the national team."
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