If we can land him, and I have to admit that I don't like the chances unless he decides to do the whole "eff you" move to Orlando, I would have no problem whatsoever. I would have offered him a three year contract during the summer of 2008 and still see him as a viable defensive SF that can spread the floor on offense with the second unit.
Some teams in the past have used him defensively at the 4, which I think is a bad notion. Keep him getting 20 minutes per game behind Pierce and he will give you very good defense, about 8 PPG, 5 RPG, .7 STPG, .4 BPG while shooting 44% from the field and 33% from three and 75% from the FT line.
Compare that to Tony or Marquis and you will find that his overall contributions will be much more than what either of those guys could provide.