For me it comes down to 1 thing. Would Rondo and Stevens be happy with Horford as part of a core to get Rondo to sign here long term and contend now? If so, then yes, I'd even give up both Sullinger and KO. If either one has some doubt, then no.
Best answer.
Horford is on a two year deal, so I don't think it'll matter to Rondo all that much particularly with Horford's injury risks, unless they can lock-up Horford on an extension prior to it.
So to me Horford is not an asset that should weigh much in Rondo's opinion on the team's direction, unless having Horford DOES bring another free-agent with him.
But the injury risk with Horford still seems to me to be of high risk.
I think Sully will have a big productive year and at a fraction of the cost, I rather keep him and all the assets required that would've brought Horford here and look for an alternative deal. If not, I'll take my chances in free-agency.