Yes, but all that cap space will disappear quickly. When they cut Tavon and if they cut Barron they will have 46 mil in cap space. 39 mil if they keep Barron, which cant be ruled out at this point considering how thin they are at LB. It will take at least a 14 mil raise to make Donald the highest paid defensive player in the league and the Rams need another 6 mil to sign draft picks. That takes the 46 mil available down to 26 mil. NRC and Sullivan will cost around 3 mil each bringing the total down to 20 mil. Retaining Sammy is now priority number 1 and that will cost 9-14 mil a year. Retaining Sammy at the higher end only leaves 6 mil to spend when the Rams still need 4 starting LBs, a NT, OL depth everywhere, and some money for a rainy day.
My point is that 3 mil the Rams could spend on a 4th CB goes a long way. Troy Hill cost a 1/3 of that price, IMO outplayed Webster, and is a good special teamer. You would be hard-pressed to find a better pair of 5th and 6th CBs in shields and Peterson. Why spend 3 mil on CB coming off an Achilles who probably starts the year on PUP and if everyone is healthy when he gets back he is battling for the 4th or 5th CB spot with guys who are cheaper and younger.