I think if you asked Danny and he decided to be truly honest about it, I think he is more in thinking with Dallas and is out searching for a 2 for 1 deal for the Celtics with the two players being a combination of Tony, Scal, JR, and Walker. Of course, as that article stated, most teams aren't looking to expand their rosters at this point and most might be carrying only 13-14 players due to the uncertain economic times.
I would think it more likely for Danny to trade a player for a non-guaranteed contract and then cut that player to save money and go with only 13 players than I would for him to trade Scal or Tony for two young end of the bench players.