I think the Grizz will keep Randolph and Gasol in the end. Gasol is restricted so the Grizz control their destiny on whether to keep him or not. He won't be as costly as Zbo ,but he still won't come cheap. Plus, it'll be hard to find a center that can do the things that Gasol does. Good centers are a rarity these days.
Randolph I think will remain a Grizzly. It's really going to come down to what Randolph wants. In my opinion, I think the Grizz FO will do everything in its power to retain him. They know that if they lose him, it would kill the franchise, lose tons of support and kill the team's momentum.
In Randolph's mind, I hope he's thinking this:
"I'm playing the best ball of my career right now. This team is on the rise and all the starters will be back if I resign (assuming Gasol is back). No city has embraced and welcomed me nearly as much as the Memphis community ,and no franchise has appreciated my talents more than the Memphis Grizzlies. Why leave a good situation?"