Gardiner on Leafs' trade block?

Still stuck in the AHL, defenseman Jake Gardiner is nonetheless considered an ultra-valuable commodity for the Toronto Maple Leafs. One the team won't trade away in exchange for a improved shot at the Stanley Cup in the here and now. The Toronto Sun reports Leafs GM Dave Nonis won't move Gardiner as part of any deal that would only net the Leafs a "rental" for the playoffs.