Dude Ginobli is 39 this year, he isn't extending (and if he is, it'll be for pennies). Parker is on his last year next season, Gasol is on a player option that year (which he likely declines and chooses to enter free agency). Dedmon will decline his option.
LMA and Kawhi are only taking up 40 million of the cap, which is 108. That gives you nearly 70 million to appease Hill, Gasol, Parker, Mills, and various filler on extensions (not to mention Dejounte and KA on good contracts).
My guess is that Patty bolts, Gasol signs for 14 mill a year over multiple years, and that leaves you with 30 million next season of space, and 45< million in the years after. They have enough to entice George Hill