Who gets the next big extension?

Following his trade to the St. Louis Blues during the 2012-13 season, Jay Bouwmeester made his first-ever appearance in the NHL postseason. But with one year left on his inherited deal, the Blues weren't willing to let 2013-14 be his last with the club: they inked him to a five-year extension that will keep the veteran D-man in place until 2018-19. There have been some notable long-term extensions in recent days, and that got us thinking: who will be the next player to land a mega-deal?