All the deals Klentak has done this year are one year rentals, that cost money but block no one and can possibly be flipped in July.
There's good reason for this, higher price free agents tend to be older and in their declining years, so the last couple years will be paying good money for a player headed to the bench (if our prospects are as good as we hope they are).
By doing one year deals, all options are kept open for next season, Klentak can see where the team is next winter, and whether it's time to roll the dice or wait one more year, depending on the development of the younger players.
By the time they're finishing adding players, they'll be north of $100M without taking on any "dead money" in the future.
The time to splurge is the window when enough young players have arrived to get you to 85-90 wins but they won't require big payments for 3-4 years, so you can fit a veteran free agent or two into the roster without forcing you to ditch talent in three years to get under the luxury tax.