The non-guaranteed second year is what moved the Hill signing from interesting to good, IMHO. If Garnett does retire, you need a capable defensive power forward like Hill. Even if Garnett doesn't retire, you probably need to hedge your bet that he'll spend more time on the training table. Assuming the medical retirement for Pek, Garnett and Hill coming off the books and the cap rise, that's a lot of money to play with in 2017 free agency. If Thibs can get the team to the 7 or 8 seed, people will listen.