Speed, scoring potential and a walk-year contract made Michael Grabner appealing to the Toronto Maple Leafs. On Thursday, as NHL teams opened trainings camps, Grabner was on his way north from Brooklyn. The deal sends five younger players to the Islanders in exchange for Grabner, a 27-year-old forward. MORE: | Going to the Isles: forwards Carter Verhaeghe and Taylor Beck, defensemen Tom Nil son...