Last summer, Shanahan was approached by the Calgary Flames about joining their organization, but he decided to remain at his job with the NHL.
Since retiring from hockey in 2009, Shanahan served at the NHL's VP of Hockey and Business Development through 2011, upon which he jumped into his current role with the League.
Drafted second-overall by the New Jersey Devils in the 1987 NHL Entry Draft, the native of Mimico, Ontario, won three Stanley Cups, all with Detroit, in 1996-97, 1997-98 and 2001-02.
In 1,524 career NHL regular-season games with the Devils, St. Louis Blues, Hartford Whalers, Red Wings and New York Rangers, Shanahan accumulated 656 goals (putting him 13th in NHL history) and 698 assists for 1,354 points, along with 2,489 penalty minutes.
Shanahan was inducted into the Hockey Hall of Fame in 2013.
Meanwhile, TFP has learned that Leiweke is believed to have interest in Philadelphia Flyers Assistant GM and Director of Hockey Operations Ron Hextall, who he worked with while they were both part of the Los Angeles Kings organization.
It is unclear if Leiweke has sought out permission from the Flyers to speak with Hextall, or if he plans on doing so. Whether the Flyers grant the Leafs permission, though, is another matter.
A source close to Hextall would not confirm whether or not Hextall has been in contact with Leiweke about a possible role in Toronto, but did indicate if he were to leave the Flyers for any top managerial role on another team, he would want "full authority" to run the organization as he deems fit.
Bob Nicholson, the soon-to-be former President and CEO of Hockey Canada, a post he's held since June 1998, could also be a target for Leiweke, should Shanahan reject Toronto's interest.