Danny could have had Boogie for less. He passed on him, which many of us didn't like, but he's not going to pay more now.
That said, I lament that we could easily be looking at a starting lineup of DMC / Horford / George / Bradley / IT. The alternative is pretty dang good too (keeping Fultz, Brown, Crowder and the 2018 pick, and maybe Hayward), but I do wonder how we get a competent starting big man.