That's what I got told too, several times. Salary officially on the books is legit and within the cap. But the players don't pay rent, get cars donated, get their teeth fixed, free suits, groceries delivered without paying, shouts at the bar, free financial advice, discounts on real estate, tip-offs at the horses etc. etc. Don't even mention the Colombian nose candy.
Basically don't pay a cent in living costs and introduced to all the right people to get things done for them, so long as they still good with the club and Uncle Nick.
Broncos have had the same thing via Thoroughbreds support.