I would think anyone 25 and up would be considered "too old" for a rebuilding team, as they're not likely to be competitive for years. That's why they'd be open to moving Hertl. So that leaves out guys like Pasta, Carlo, etc.
Not sure what that leaves us. Our 1st, Lohrei, Lysell, Swayman on the high end. Beecher, Duran, Gallagher on the low end.
If SJ struggles and Hertl doesn't produce, his value could come down. He only has 1 point in the first 4 games. At $8.1m that's a hefty contract to unload. You could also try to bring the price down by being willing to take on the whole deal with no money sent back. They basically gave away Burns for cap space. Hertl's younger, and I don't expect them to give him away but they might take less if they don't have to take back money. Lastly, Hertl has a NMC so he's not going to go just anywhere. How many contenders can add $8m without sending money back?