If this was done a few weeks/months ago the following players would have been on it: Alfredsson, Bouchard, DiPietro, Grabovski, Horcoff, Iginla, Lecavalier, Morrow and Weiss. Two of the other leaders (ANA and COL) are actually UFAs and obviously the Calgary one is likely to retire.
The quiz actually has 6 bonus answers (see the spoiler for names): Calgary and Colorado have the second place players in case of retirement and Chicago (x2), Columbus and Minnesota have players that were the same season as the leader