Not necessarily. It completely depends on what Myers signs for. If he gets a raise, or even matches his current average, then yeah, you're probably right. However, if he signs somewhere near $3-$3.5, I don't think that pushes Trouba out the door.
The problem is with Schmidt resigning in Vegas and Ellis in Nashville, the number of quality D available is dwindling which raises the stock in Myers. The debate about Myers being a quality D notwithstanding, he stands to earn a good contract this summer if he hits the market based on reputation alone. I believe that the Jets could sign him cheaply, but they'd be the only team that could. If he hits the market, teams will bid against each other. He still holds value in the league, but I think he and the Jets understand the landscape in Winnipeg would require him to sign a smaller contract, and if he wants to stay, he'll do so.
Should they resign Myers? Completely different question.