The deal we've all been waiting for is officially done. Per the official website.

Celtics Sign Jeff Green | Celtics.com - The official website of the Boston Celtics

The Boston Celtics announced today that they have signed free agent forward Jeff Green. Per team policy, terms of the deal were not disclosed. "We are thrilled to be able to have Jeff back with the Celtics," said Danny Ainge, Celtics President of Basketball Operations. "Jeff’s versatility on offense and ability to guard players out on the perimeter is something that we are looking forward to having on the court this season."

I officially think that sounds officially done. Officially speaking.

There was no secret trade, no failed physical (as far as we know), no smoking gun. It really was just (apparently) complicated contract language.

Update: You can also (predictably) blame the insurance process.

Celtics finally make Jeff Green’s contract official - BostonHerald.com

While doctors have told the club there is less risk to Green’s career with this procedure than if he’d had a torn meniscus in his knee — and both player and club are confident he is healthy — there were hoops to jump through with the insurance situation.

Now, he just has to go out there and play.

“I cannot wait to get back out onto the court and help this team towards our goal of winning another championship for Boston,” said Green.

Oh yeah, and I'd kind of like to know what the contract terms are - but I guess we'll have to wait for the media types to fill us in.