Word is they want Fields - just people reading the tea leaves of the owner essentially saying the "who to sign" edge goes to the younger player.
That said, if Fields stays in Pitt, he should not sign for longer than 1 year. The gives him a hedge in case the Steelers draft a QB and/or bring someone else in. He needs to avoid - at all costs - getting stuck in a deal with Pitt where he ends up #2 while wasting his prime.
All in all, I would rather see him go elsewhere. I don't have much confidence in Pittsburgh's weapons/Oline/and OC. If he can get to a spot that will use and develop him the way the Ravens have used and developed Lamar (or even the Eagles & Hurts) that would be best.