Spot on DIC. I agree the Tag has to be non-exclusive. Either resign Bud, use him as a rental this season, or turn his trade into some serious draft capital.
Here's a thought to free up space. Let BJ and Foster walk, move Feiler to LG and promote Chuckes to RT. I retain Banner either way.
I will also say, I see a scenario where the Steelers keep Foster for one more year to keep consistency in that line, but I think that is a mistake. Foster's at the end. BJ and Feiler are just starting to come up. I personally keep the players on the rise, and dump the vet in this case.
Lastly, there is ZERO money for a vet QB. I'd love to have one too, but that is not a SB winning move. You can't tie up any more money in the QB to fail to address other needs on D/OL/TE. Plus I already like Rudolph's development. First season went 5-3, and showed he can make all the throws. I expect improvement this year as well, and if that's the case, he'll be a better option this year if Ben misses time.