First things first...the cavs are not looking to rent players for a year. They are looking to build a core and be good for several years in a row. The 'renting' players theory is assuming Lebron is leaving after next year which isn't happening. Lebron has spent 6 years developing with a team that is now a legitimate top 5 team. He isn't going to start over again after next year. The guy wants to win championships not rebuild organizations over and over.
Andy is going to resign with the Cavs. The guy eats dinner with Z, takes Judo with Delonte West and has even written 'chose one 2' on himself. He is great friends with everyone on the team. He even did the chalk toss before game 5 of ORL series. The Cavs are going to sign him.
I don't see the Cavs moving any young players in the offseason (specifically Hickson), but they will definitely be active again