I just thought of a complication (and apologies if it's been brought up earlier in the thread):
As per Reiss' article today, everybody's going to tamper with Revis behind the scenes. It's part of the negotiating process. It may behoove the Celtics to be gracious about it, as part of having pleasant relationships with Revis' camp during negotiations.
What I'm thinking of is a former boss of mine who encouraged me to go out, look for a job, and get offers, so that he could take them to management and try to get them matched. (I was a stock analyst in the 1980s, which had some athlete-style dynamics in terms of income level, competition, and bidding-war offers.)