If it has to be a big four player that is traded for Chandler...ie:
(Mavs get Ray Allen, we get Tyson Chandler)
Starting five:
Rondo
Green
Pierce
KG
Chandler/Nene
Could Green average 18-20ppg to fill the scoring void?
I think Dallas could be tempted by Ray Allen ... but I don't think he'd be quite enough to get the job done.
I reckon they'd rate Tyson Chandler higher (his defense being so key to their title run) + Tyson is younger ... but if they were unhappy with the financial terms Tyson was demanding and felt uneasy about re-signing him? Yeah, they might just consider something like this. Maybe.
Since Ray Allen is likely only a one year rental to them, I think Boston would have to include another valuable asset on top of Ray. Probably the Clippers pick. Allowing Dallas to make a run at Deron Williams/Chris Paul or Dwight Howard next summer.
As for Jeff Green's scoring, I view him as a 13-14ppg threat on the wing.
And, the new lineup as a whole, I'd love to watch a team like that. I think it would be fantastic to watch KG and Tyson patrol the paint and dominate the boards. Two big wings too. Plus Rondo's scrappiness. Easily the best defensive team in the league. It could be the best rebounding team too depending on the bench. If so, you'd only need a middle of the road type offense to compete for a title. Doable.