There only seem to be a few teams who are actually in the running to get the guard, but any team could come out of the woodwork in the eleventh hour. If there's anything we can learn from Steve Nash going to the Lakers, it's that if the deal is sweet enough, a man can go to a team he's spent his career disliking.
With that in mind, there are several teams that the Celtic fans would absolutely dread seeing Ray Allen go to.
This is a no brainer. The Lakers and Celtics have been bitter rivals for decades. Really since the creation of the teams, they have been going at it.
When Lakers fans saw Shaq in a Celtics uniform, it was not good. However, he was at least two teams removed from the situation. In Ray Allen's case he would be going straight from the Celtics making it an even harder thing for fans to see.
Not only are the Heat the team to beat, they're also the team who knocked the Celtics out of the playoffs last year. The Heat are most avidly pursuing Allen, complete with LeBron James and Dwayne Wade Facebooking and Tweeting about his arrival. While this is a fairly new rivalry for the Celtics, it's one that will only grow stronger with time, and fans certainly wouldn't want to see Ray Allen in that uniform.
The New York Knicks are a team that Celtics fans would hate to see Ray Allen go to because of the innate New York-Boston rivalry. This is a competition that spans sports and is based largely on the historic nature of the cities.
Boston is known for it's championships, and the thought of New York teams making a comeback in number of titles (which they're doing pretty steadily between the NFL and MLB), would make it awful to see Allen in a Knicks jersey.
The Chicago Bulls are a young, up-and-coming team with a ton of talent. Sadly, they are injury prone and have struggled come playoff time. Ray Allen would not only be going to an Eastern Conference team, but could be giving the Bulls that edge that they need to get over the hump during times when players are injured.
It's bad enough to see him on a team that the Celtics would regularly play, much less one that might beat the Celtics when the season is coming down to the wire.
The Philadelphia 76ers are getting so close to the Finals that they can almost taste it. However, they still haven't gotten there yet. This was the first year in over a decade that the Celtics met the 76ers in the postseason, but it was a hard-fought series and Celtics fans won't likely be happy to see the 76ers again anytime soon, much less with Ray Allen on the opposing roster. Philly has a good team and this is a matchup that is likely to turn into a rivalry if they play to the level of their ability.