I'm not sure how much value Conley has right now. Superhuge contract for a guy who has had injury problems over the last couple of seasons and is one the wrong side of thirty. Gasol is also approaching the twilight of his career (he's 33 years old now) and making almost 50 million dollars over the next two seasons combined. Considering how huge those contracts are, you have a slim chance at best of attaching Parsons and his 49 million dollars over the next two years to one of them. These are the types of contracts you can move when a team's desperately trying to cling to its playoff hopes in February but harder to pull off in the offseason when every team has an opportunity to think things over.
And keeping Bickerstaff as coach is a very late-Maloof era "Keith Smart seems like a nice guy. He's coach now!" move.