Don't Cousins and Durant hate each other?
I think getting Cousins here would out a lot of players off coming here as free agents tbh.
Are you referring to the little shoving match that they had a couple of weeks ago? I did a quick google search, and that was the only thing that I could find, which doesn't seem like something that would stop Durant from coming here.
However, I have to say that though Durant is the better player, a focused Cousins would probably be ultimately better for our team due to the fact that he'd help fill more holes than Durant. Durant would bring much needed scoring to the group, especially crunch-time scoring, and size and rebounding from the wing position, but Cousins would bring scoring, interior defense, size, and rebounding from a position that we need it more from - our center position.
Don't get me wrong - Durant is clearly the better player. But I think if we had to choose which player would benefit this team more right now, an excellent argument could be made for Cousins due solely to being the two-way big that we've been looking for for 5+ years now.
EDIT: Also, who in the East could stop Cousins down low? Whiteside? Horford? Whiteside is more of a weak-side blocker than an individual post defender, and I'm a big Horford fan, but I just don't think he could physically stop Demarcus down low, especially given his age and injury history.