I think economics may result in Dave Goucher doing the Pats on radio as well as the Bruins.
Yes, there would be around a dozen Bruins' games Goucher would miss during the NFL season, but if the Bruins had a Saturday game in Boston (or a pre-season Saturday game elsewhere in the region, like Hartford or Providence), and the Pats had a Sunday game at home (or let's say, the B';s had a Saturday game atb the New York islanders and the Pats nhad a Sunday game against the New York Jets at the Meadowlands), Goucher could do both.
A couple of years ago, Goucher had to miss a couple of games and I recall that Ryan Johnston (who I believe is with WCAP-980 in Lowell and previously did University of Lowell and Lowell Lock Monsters minor-league hockey games for them) filled in. If still in the area, Johnston could (depending on whether he were to do radio broadcasts of ULowell hockey in 2013-2014) fill-in on those Bruins games Goucher would miss.