Such a deal could make sense for Boston considering that current closer Koji Uehara has lost a bit of velocity and owns an uncharacterstic 4.15 ERA with two runs and five hits allowed in his last 2 1/3 innings.
Papelbon, on the other hand, has been lights-out. He is 4-fof-4 in save opportunities and had not yielded a run until Sunday. He is also quite familiar with pitching at Fenway, having served as the Red Sox closer from 2006 through 2011. Papelbon is one of only a handful of major league closers that have maintained that role for more than a few years.