I was talking myself into optimism for a minute here, but OKC's ability to sign Horford ruined this pipe dream for me.
http://forums.celticsblog.com/index.php?topic=85861.15No reason to be nervous. I don't think this substantially changes his likelihood of going back to OKC anymore than it already was. In fact, this very well could've been an ultimatum by Durant or his people using Boston as leverage - "Hey, they're going to sign me AND Horford over there. How are you going to match that?" If anything, it strengthens our argument due to knowing that Horford is a Durant target and we're the only team who can sign him outright without gutting the team.
Also, numerous things would have to go right for them to ultimately have enough room for Horford and get him to sign there, and even if they do get enough space to sign him, they're not in an ideal position afterwards with plenty of ammo to use against them if you're the Celtics, i.e. mortgaging their future draft picks to create space (think Sacramento), handcuffing their salary cap the next year or so, doing a number to their supporting cast to get space, staying in the West where several other teams other than GS, SAS, and LAC are poised to make a leap, etc.