Perhaps, but there's no way they will both accept such a discount, unless it's for one year only, like Selanne and Kariya once did. But put yourself in their shoes, is Detroit the best place for their one shot at a Cup together? Because at that price (14 mil for both) they can have their pick of ANY NHL team they want. And right now Detroit doesn't look like the team most poised to win the Cup next year.
And to sign them both long-term, the price tag will START at 20 mil.
20 mil what? A year?
And 7 million isn't such a discount. They are perhaps leaving a few million off the table to play together and for a team with a history of winning and a group of guys who know what it takes to win. You don't get that from many other clubs.