Sources tell TSN the Toronto Maple Leafs have received what the team considers to be a significant offer for defenseman Tomas Kaberle. There are few details available, however the offer arrived unexpectedly Thursday afternoon and is believed to be from one of the teams who may have been in the hunt, trying to acquire the negotiating rights to Florida's Jay Bouwmeester. The unidentified team offered a player and a draft pick for Kaberle.