Plouffe has, what, one more year of team control? Assuming he continues to play well, offer him arbitration this coming off season. Let things play out next year with Sano, a potential position change, injuries etc. Then give him a QO after 2016, which he will probably turn down. If things have worked themselves out and you want him as part of your future, you make a fair multi-year offer. If having a $12-15M per year Plouffe is creating an unnecessary log-jam, then you watch him walk away and you pick up a 1st or 2nd round pick.