Could KG be the middle man here? The Celtics can't negotiate with Sheed yet, but there is nothing to stop KG from calling up his buddy Sheed and letting him know that the Celtics want him as the final piece for Banner 18.
If the call went well, KG might have given Tanguay a hint that Sheed was interested in coming here. Didn't KG, Allen, and Pierce help with recruiting Casell, Brown, and Marbury? In each of those cases, word got out before the signing through the players.
Anyway, hope this is true. If we has the "Good" Sheed last year, we might have gone a lot deeper in the playoffs.