to expand on the backloading thing- pretend that every offseason you give out a 2 yr $3M contract for 100 consecutive seasons.
assume you frontload by always offering 2M in season 1 and 1M in season 2. Your payroll hits will be 2, 3, 3,....,3,3,3, 1
assumed you always backload by offering 1M in s1 and 2m in s2. Your payroll hits will be 1, 3, 3, 3,..., 3, 3, 3, 2
The difference is having an extra $1M of spending cash in S1 or S100...obviously having it in S1 is preferrable, by always frontloading, the future money saved will always be in arrears and you'll never be able to access it, much like a security deposit.