Fair, but also bear in mind that the fact that they're well run is why he might get traded. They know that there's a price ceiling on a 26 year old running back with a cruciate reconstruction and a previous PED suspension, and if he won't accept their ceiling then they'll be well advised to find someone who will.
Pittsburgh have never had a problem finding running backs. Their system is built for it.
They're not going to find a suitable replacement on the eve of the season, and James Conner isn't it either.
If they want to wash their hands of him, it'll be in the offseason is my guess.
I'm also aware that HB is a pluggable position, however Bell is a massive part of their offense (as a runner and a receiver).