Andrea Pirlo says Cristiano Ronaldo must get used to a fluctuating system under his management after already holding showdown talks with the forward.
The new Juventus boss was unveiled by the club on Tuesday as they embark on a new era following Maurizio Sarri's surprise sacking.
Under the old regime Juventus stars were largely deployed in a strict 4-3-1-2 formation as part of the disciplined 'Sarri-ball' approach.
While that system brought Sarri success in Serie A, it did not help him avoid the axe after his shortcomings in Europe.
Pirlo is now under pressure to deliver what Sarri could not, and key to those plans will be the role of Ronaldo, as well as Serie A MVP Paulo Dybala.
"The system can vary from game to game, defending with three and building with four," Pirlo said at a press conference. "I have already spoken with Ronaldo and we will have time to address tactics and roles on the pitch.
"[Paulo] Dybala was never for sale, he is part of the project. If both can they match on the field? As long as there is sacrifice and altruism.
"The more quality players the better."
Both Ronaldo and Dybala had been linked with transfers elsewhere in the aftermatch of Juventus' disappointing Champions League exit to Lyon.
While Pirlo has no intentions of selling either star, Gonzalo Higuain will not face the same fortune.
"He [Higuain] is someone I admire but cycles close," Pirlo said. "We talked eye to eye and decided to go different ways."
Juventus could move quickly to replace Higuain, 32, with reports linking them with Roma's Edin Dzeko, 34.
Former Juve star Moise Kean could also make a return to the club on loan after failing to make his mark at Everton.
The Old Lady have already added to their squad this summer after effectively swapping Miralem Pjanic with Barcelona for Arthur Melo, while Lyon's Houssem Aouar is also on their list of targets.
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