According to a league source, the Philadelphia Flyers have an interest in Carolina defenseman Bryan Allen. The Hurricanes took Tim Gleason off the market by inking him to a four-year, $16-million extension. Allen owns a $2.9 million cap hit and he is scheduled to become an unrestricted free agent this summer. Montreal blueliner Hal Gill is also thought to be on Philadelphia's radar. Both players are viewed as defensive-minded rearguards, so it's clear what the Flyers are looking to add.