I would suspect this is the sticking point as well. UConn agreeing to one game at Chestnut Hill is us lowering our scheduling standards. If we can get Michigan, Missouri, BYU, and Boise - all programs more highly regarded than BC - to come to CT, we must get BC to come to CT if we're going to Chestnut Hill.
I'm not against one game at Gillette, so long as it's a 50-50 ticket split. There's no good reason to not agree to that one neutral game there. Neither team is conceding anything and distance wise, it's even for both sides.