Last season was the first time since 2008 that two NHL restricted free agents signed offer sheets. Shea Weber agreed to go to the Philadelphia Flyers and Ryan O'Reilly to the Calgary Flames before their original teams, the Nashville Predators and Colorado Avalanche, matched those offers.

Weber and O'Reilly extended the streak of matched offer sheets in the NHL to five, and 10 of the past 12. Since the summer of 1997, only Chris Gratton (from the Tampa Bay Lightning to the Flyers) and Dustin Penner (from the Anaheim Ducks to the Edmonton Oilers) have changed teams as restricted free agents.

Could this be the year that it happens again? With a lower salary cap for 2013-14, more teams are vulnerable than ever before to having young players taken from them, with only draft picks as compensation.

Here are five players that ravenous general managers would be wise to think about in the coming days and weeks.