Yeah this is true: we don't know what the offer is, just like we don't know what AD's demands are.
All that aside, though, I do assume that the Rams are not as stupid as the Skins, who are misplaying Cousins badly once again. Demoff does pony up the bucks like he demonstrated with Tavon, the key for him is always frontloaded structure so he can get out from under it if he needs to. So I'm guessing here that there's a reasonable chance that what is holding it up is structure.
Still, though, and knowing we all differ wildly on this topic, I do have a problem paying any one non-QB at the $20M level. Now Donald is an outlier in that he's a Hall of Fame player in his youth, and he does warrant top compensation, but he's also getting it two years early. So if the guy cannot meet the team in the middle, then like I've said before play hardball with him. Rams can easily make him play out his two years and then franchise him for a third year if they so choose. THAT is leverage.
I love AD, but the dude is really misplaying this one. And his timing is bad too, with the new regime coming in with the "We Not Me" slogan and all. He deserves to be paid, but not necessarily $19-20M per year when the Rams are coming to the table with him two years early. If that is his demand, then I agree with the Rams playin hardball or even trading him in a blockbuster deal.