I believe Stafford's extension will likely cut his 2022 CAP hit to half that of 2021. Extending Havenstein will have the same effect for him in 2022.
Two contracts that offer substantial savings are those belonging to A'Shawn Robinson and fan favorite Robert Woods. Robinson should be offered an extension or traded, he's only 26 years old and showing good signs towards future increased progress, so extend him.
It won't be popular, but the Rams can't afford to maintain both Robert Woods and re-sign OBJ, they are within days of being the same age, and if OBJ is willing to sign a team friendly contract, trading Woods not only offers some good CAP relief, I'd also expect a pretty high draft pick to come our way. With Kupp, OBJ & Van Jefferson at 1, 2 & 3, the Rams also have very solid competitors next year in Jacob Harris, Ben Skowronek and Tutu Atwell, to say nothing of an abundance of practice squad WR's.
Johnny Hekker is likely to become a CAP casualty during the off-season, Whitworth will retire, especially so if he gets a ring, and the Rams will add several $millions$ to their available 2022 CAP.
Lost to next years free agency will be (imo) :
Darious Williams
Sebastian Joseph-Day
Ogbonnia Okoronkwo
Buddy Howell
Re-signed free agents :
Joseph Noteboom
Austin Corbett
Brian Allen (offer a 1 year prove-it deal for staying healthy)
Sony Michel (if the price is right)
Von Miller
OBJ
Johnny Mundt (another cheap 1 year contract)
Donte Deayon
Our RFA's & ERFA's will all return to camp.
jmo.