last year, philly shocked the world by taking Senneke at #3. He was supposed to go as early as 10. had Philly found a trading partner in the 6-8 range, they likely could have gotten a 1st round pick value and still gotten senneke with very high probability. the fact that they took him so early was a failure of asset management, even if he turns out be a great pick.
Granted, you have to find a team that is willing to trade with you, but usually thats a very possible thing to do. teams have their lists and getting the chance to grab people higher on the list has value to most every team.
it seems to me highly likely that Misa is higher ranked and desired than Misa across the league. many had Misa as the #1 pick. if grier prefers Martone, then it would be very wise to take advantage of that differenc in preference between grier and other teams and get a nice return to switch from misa to martone.