IMO "interested party" may just be agent speak to drive up the price, after all every Pats trade turns to gold(??)...
From the perspective of salary cap alone, Conley with cap hits of 2.8M(2019) and 3.3M(2020) is more appealing the Jenkins 14.75M ( 2019 & 2020) or Peterson 11.8M (2019) & 13.1M (2020). Conley another 1st round pick would fit right with the so called "misses" of other teams.
Gruden jettisoning all of his talent may be folly, bringing a completely new team will take a couple of years to become competitive, either that or they could become another Cleveland Browns..