He has damaged the reputation of the Celtics.
How so?
By saying he's a Celtic. He damaged his reputation and his legacy. He could've stayed, been paid more, enjoyed a longer tenure with the Celtics. Probably reverted back to the bench once Bradley came back healthy, but would still receive a decent amount of minutes.
You can't say your a Celtic like its a every day sort of thing. To me, that is not only a slap in the face to us as a fan, but to every player who's given their heart and soul to the organization, namely Pierce/KG. Pierce has said many times Allen was like a brother to him, and it really hurt to see him go. Pierce to me is and will always be the face of the franchise in this ERA.
Ray left the team ignominiously, and while the organization overall wasn't innocent. He decided to leave us for the rivals. We then offered to give him more money, probably a larger role considering he was getting healthy, and a no trade clause. Something we didn't even give to Pierce who's between with us since day one.
EDIT:
I don't see how Ray can truly feel happy knowing that his jersey won't be retired by any of the teams he played for.
Nor, will he express true happiness, watching the video of him in the back next to Mario Chalmers, as Lebron holds up the trophy gleefully with the Big 3.
Allen should've never left. He was getting old, and wouldn't be able to produce the same amount of minutes or numbers. Not to mention how does he feel knowing the Heat couldn't care less about him if he fails to show up? He'll be on the trading block if he doesn't pick up his player option.