If Neymar's renewal were to happen again, I believe they would negotiate very well all of his and the club's percentages, all from scratch. Because Santos had more losses than profits with Neymar, where a good part of the profits went directly to his father's holding company. Santos kept what was left, and it was very little.
It happened again. Neymar decided to renew with Santos until end of 2026 and will sign the new contract on 27 of this month. I think it's not 100% oficially announced by Santos or Neymar, but many sources say this is what is going to happen. And there are many interviews with Neymar about Santos being his home, so can only believe this is true.
Most of the south americans players are super attached to they original sites, so i believe Neymar is also one of this cases and he doesnt want to go far again from all his friends and family.
I really hope to see him recovering his level, he is one of the must fun to see players across the world. But until now he was a failure in his second stage on Brazil soil.