I don't think it's a given the C's don't use the full MLE on Pose. Who else is realistically available that we might be foregoing if they use the MLE on him? Jamison, maybe. Kurt Thomas, maybe (I doubt he gets the full MLE, but he'll get a portion of it). Is there anybody else out there who is likely to have as much of an impact on next years' team as Posey?
I'm confident that ownership will step to the plate and spend the money, even though it means paying the tax. Ray Allen's contract will be coming off the books soon. As long as we're playing into June each year, they're selling a lot of tickets and a lot of jerseys.
And, I really don't see Posey signing elsewhere, if the dollars are reasonably close. There really don't seem to be any DECENT teams with more than the MLE to offer (and Posey's not a player who's likely to help a poor team all that much). He really seemed to buy into the whole spirit of this team, so why not come back? Would you rather go to battle every night with KG and Paul, or with Kobe and Pau?