Not sure why Carmelo would want to come to Toronto (doubt he would either) but according to Steve Kyler from Hoopsworld the Raptors have made an offer to Denver. No details listed for the players involved, but news nevertheless. Stay tuned for more updates.
DeRozan is signed with Toronto in the Atlantic Division through 2014, so the Celtics should be seeing plenty of him over the years — unless the Raptors trade him away like every other good player that goes through Canadian customs.
JV is a project with upside, not a focal piece. MU is doing important things right now, but his hires will be as important as firing the old guard like Kelly. We still have to sort out a long-term coach and handle the roster issues mentioned above. I think Lowry IS the backup guard, though.