Melbourne's highly rated playmaker Pezet will join the Broncos in 2027 after he plays one season with Parramatta in 2026.
Black, just 19, has come through the Broncos' academy system but is off contract at the end of next year. He is yet to re-sign for 2027 and is a free agent from November 1, but Reynolds wants him to stay a Bronco.
Reynolds wants to be a head coach in the NRL and in his autobiography "On My Own Terms", released on Tuesday, he revealed that it was a reason why he did not fear retirement as a player.
Speaking at the launch of the book at Broncos HQ, the club's skipper said he had not closed the door on retiring at the end of next season.
If Reynolds does move into coaching as an assistant at Brisbane it will be with an open mind about who should inherit his mantle.
"I have a lot of respect for Coby Black," he said.
"I don't know Jonah Pezet too well, but I know Coby and his work ethic. I know he won't be giving up that spot without a fight.
"There's a lot of similarities. I take myself back to when I debuted - myself and Ryan Carr fighting it out for the No.7 jersey at Souths, and it brings the best out in one another.
"Competition for spots is healthy within a club and it's certainly special to be a part of."
Reynolds, fresh from winning the 2025 title after his premiership with South Sydney in 2014, also knows that coach Michael Maguire makes players earn their jerseys. Reputations do not provide a saloon passage.
There is a chance Reynolds, as a player, could be still in the picture himself in 2027.
"I don't know yet. I still haven't come to an agreement when I am going to finish up," he said.
"If I am playing good football next year and I am fit and healthy and enjoying myself, I don't see a reason to end that.
"I'm just focused on next year and getting myself right to go again and that will sort itself out through the season."
Reynolds has no doubt the Broncos can go back-to-back. He points to the fact the team was just warming to his old Souths mentor Maguire's methods mid-season and "scratching the surface" of their abilities.
"We have a lot of young blokes who are turning into senior players and becoming better footballers," Reynolds said.
"You have to look at Reece Walsh and the form he carried into the final four weeks and overseas in England (for Australia). Paddy Carrigan, Payne Haas, Kotoni Staggs, the list goes on. They are only getting better and we're hungrier than ever to succeed."
Reynolds has tasted success and wants more, as a coach.
"I love the game. I love football. I love seeing my teammates have success and be happy," he said.
"I got to experience that a couple of weeks ago. I can only imagine what that is like as a head coach. They get to have their blueprint all over the game plan.
"They get to teach young men how to be great footballers and better people. I want to be in a position where I can help those people one day as well."
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