Crisp will almost certainly be traded this offseason after Jacoby Ellsbury emerged for the Red Sox during their postseason run. Based on his performance in Boston, it will most likely be a salary dump on the part of the Red Sox and he could be had cheaply.
He was a disappointment in Boston to be sure, posting OPS+ of 77 and 83 the last two years there, but in his previous two seasons in Cleveland he posted OPS+ numbers of 110 (2004) and 117 (2005) while hitting 15 plus HRs both years, getting on base at an average clip (.345ish) and having some serious speed in the OF tracking down fly balls.
I think he could be a decent fit here, and could allow us to trade one of our young OF for a premium arm. Duncan's use in that area has been noted by many in this community.
He could be a leadoff hitter if he can mature a bit more. At the very least he will improve our overall OF depth and make its defense better, he could also be very useful as a leadoff hitter if he could get his OBP in the .360 range (not unfeasible) and he could be had for little, I am sure Reyes would get the job done, perhaps even less would do it.
This is by no means a fix all move, but it gives us a younger type OF with some upside and athleticism. Just a thought.