Juventus refused to put a release clause into Paul Pogba's contract
Manchester United signed Pogba in an £89million deal last summer.
The France international originally left United to join Juve in 2012 – a move that earned United around £1.5m in compensation.
And Juve director Beppe Marotta told Italian newspaper Tuttosport they were determined not to give the midfielder a release clause.
“It’s madness, I’ll never put one on a player," Marotta said.
"It’s not an advantage, it puts you in a weak position.
“If I’d put a clause on Pogba we’d have said £52m (€60m) was good, but then we sold him for £89m (€110m)."
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It puts you in a weak position
Marotta on release clauses
Juventus are preparing for a big summer of transfer spending as they seek a seventh successive Serie A title.
The club have already secured Juan Cuadrado from Chelsea's in a £17.6m deal, while Renato Sanches and Andrea Belotti are supposedly on manager Max Allegri's shopping list.
Allegri was granted £75m to sign Gonzalo Higuain from Napoli last summer and the club have so far succeeded in keeping suitors off Paulo Dybala.
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“Last summer was perhaps one of the best transfer campaigns in our history," Marotta told Tuttosport.
"I don’t want the expectation of something like that to happen now. We definitely want to strengthen the team though.
Paul Pogba helped Manchester United to Europa League glory on Wednesday
Juventus sold Paul Pogba (right) to Manchester United for £89m
“We want to strengthen the team and some tactical changes mean we need some adjustments, even if we have a strong squad. We won’t sell our champions though."
Discussing his transfer policy in Turin, Marotta said: “There are two levels: we take someone who is already an established champion: look at Dani Alves, [Mario] Mandzukic, [Sami] Khedira, [Gonzalo] Higuain and so on.
“Or, we look for talent.
"But, listen, we look for a talent who can become a champion. That means someone who has not only the technical qualities but also the human values to turn into a champion, as happened with Dybala for example."
Dybala signed a new contract earlier this year in an attempt to put to bed speculation he could join Barcelona.
Beppe Marotta says he never lets Juventus signings negotiate release clauses
The Argentine then scored against Barca as Juve knocked the La Liga giants out of the Champions League.
Juve face Real Madrid in the Champions League final on 3 June, with Dybala expected to start.
And Marotta explained his plans for the 23-year-old.
“We have a Del Piero project for him, in his new contract we’ve taken into account the value of the player, which goes hand-in-hand with enhancing the brand of the club," he said.
“There’s common ground and the intention to have a long journey together."