Jaylen has 3/183M left on his contract. The 2/142M extension would ultimately make it 5/325M.
Giannis has 2/120M left, and his upcoming extension could be 4/275M. So 6/395M in total.
They might also be looking at that and weighing their options. FWIW, I still think regardless whether it's Brown or Giannis, they will try to reset the repeater tax and then go all out again after 2027 similar to how they got KP-Jrue in 2024. White may not be part of it, or he could and they could just try to land one legit player to pair with Tatum-Giannis-White and go the second apron route again as a "last hurrah" of sorts.