I've just finished running a retrospective of a team I doesn't manage usually (they don't have a dedicated ScrumMaster), and it appears that there is a conflict of opinions in the team (which is relativelly small in members).
The majority of the team rate themselve as doing poor in term of synergy and collaboration. They think it's their main weakness and think they should take actions on that.
But on the other side, one of the member think they are fine in this regard and this is not an important aspect to be taken into account for the overall team performance. He says communication is fine, that they talk enough already and that bug tracker is sufficient. He says he perform better working alone and that disruption from more collaboration would deteriorate his productivity.
It's obvious to me that the synergy of this team is indeed bad, and this case is an obvious example. So I'd like to address that without hurting the feelings of anyone. But during the retro I couldn't come up with a quick and elegant solution.
Any advice on how to solve such a case?