I'm optimistic of upwards of $100M, and I think CUSA (and the Big 10) will get "synced" with all of the other conferences which expire mid next decade, at which time there will be another "great realignment".
I'm optimistic because there is not a lot else out there. Most of whatever you want to class CUSA as (second or third rate content) is tied up for some time. Other than the Big 10 (which is a different level of course) all college content is tied up for a while. As is most all golf, the NCAA playoffs, NHL, tennis, NASCAR, about anything I can think of all tied up in long term deals. And you have the other 3 majors (Fox, NBC, CBS) trying to cash in with their ESPN clones. Trying to get some of that ESPN level retransmission $$ (FIVE BUCKS A MONTH!! ). They, especially CBSSN, need something that makes people want the channel. And ESPN has to play defense. So everybody is bidding.
DirecTV (which owns the ROOT networks) is looking to protect itself relative to content. You know how the industry works. The cable companies and DirecTV also own channels and are thus in the situation of paying one another for content (Comcast pays DirecTV for ROOT in the Pittsburgh market, DirecTV pays Comcast for CSN in the Chicago market and so on, both with sports and general channels as well). So you have a kind of "cold war" standoff. If Comcast screws over DirecTV for its channels, then DirecTV just screws over Comcast for its, and so on across the industry. By having "must have" content DirecTV can keep prices low and keep itself in the situation of having "all" the channels. I think DirecTV knows that if it ever gets in a situation of have a nice mix of channels, but not "all" its other limitations (no internet, rain fade) cut its marketability. DirecTV has a current deal with the I-AA Big Sky for is exclusive channel, and DirecTV's Latin American operation is a major rights holder to sports south of the border.
As to Turner, the NBA is up for renewal as is the PGA Championship. TNT already lost NASCAR. So Turner might be in a situation of its only sports content being early round baseball playoffs (actually quite low rated) and NCAA basketball that you can watch on the internet for free. That ain't much. A cable system could easily just dismiss TBS/TNT/TruTV and Turner's other channels as "just a bunch of reruns" and demand lower fees at their next renewal. Turner needs to amp up its sports offerings, along with other original content. Seinfeld's and Law & Order's 135th time over rerun is pretty marginal.
The "four networks" are Disney (ABC, ESPNs), 21st Century Fox (Fox, FS 1 &2, FCS, FSN) , CBS Inc (CBS, CW, CBSSN) and Comcast (NBC, NBCSN, Comcast Sports channels).
I suspect we will end up with a mix between 2 or 3 of the above mentioned companies, with a supplement to Sinclair's ASN.
Maybe I am overly optimistic, but if, say CBSSN doesn't try real hard, they won't survive. Rodeo and Div II basketball won't keep it alive.