Looks like the Hornets have given Mitch McGary a promise to take him 24th overall, according to Chad Ford of ESPN. This should help explain him being unwilling to take a physical prior to the draft. It's not an official, binding guarantee the Hornets will select him if available. Although teams usually stick by draft promises, assuming he's still on the board when they pick, which he should be.
Here's the LINK for that story.
In other NBA news, the Pistons and Kings have had talks about a Josh Smith trade, with Derrick Williams and either Jason Thompson or Jason Terry coming back to Detroit. Hope that one pans out.