I would tell him you want to setup a source control server (That you personally will administer so no overhead or extra work for him.) Have it be fully optiona

I would tell him you want to setup a source control server (That you personally will administer so no overhead or extra work for him.) Have it be fully optional aka people who use it have to fully comply with current practices(Everyone has to be able to work as if it doesn't exist.) That way he gets zero complaints from other staffers who resist change.