With the current CBA expiring this September, it's possible that many of the things that come with it - most importantly the current number of "years accrued" before a player hits unrestricted free-agency (7), or the ability teams have to offer players "life-time contracts" - could come to an end. Quietly, that uncertainty is Nashville's best bargaining chip.
Shea Weber could be leaving millions, and I don't mean several millions, I mean upwards of fifty million dollars (US) on the table should he go past September 15th without a long-term deal in place.
Consider the possibilities. Say Shea Weber signed a long-term deal this season, let's go with 13 years at an average cap-hit of 9 million (not a stretch), that would be worth 117 million dollars over the duration of the deal. If term is capped at six years in the new CBA (which, many expect it will be) and Weber signs a deal worth 11 million per season - he's just lost 51 million dollars! That's a fair bit of coin.
If Shea Weber tries to force his way out of Nashville this summer, Poile's best play is to refuse to budge. After all, that refusal could well prove to be a disaster for Shea Weber's bank account. Every day between now and September 15th that Shea Weber doesn't ink a long-term deal, he incurs a sizable opportunity cost and that fact strengthens Poile's footing.