So here is the latest news via ESPN (Insider).
The idea would be that if Wallace is retiring then that team would get that cap space. His contract is for $6.32 million this year. Combined with the $2+ mil we have left, this could give us an opprtunity to go out and pick up another nice piece.
I think this is a good deal and Barbosa could thrive with Boston. They like to run more than most in the Eastern conference and they could use a another shooter, especially without Wallace.