From Canucks.com—

Vancouver Canucks General Manager Mike Gillis announced today that the Canucks have acquired defenceman Shane O’Brien and right wing Michel Ouellet in exchange for defenceman Lukas Krajicek and right wing Juraj Simek from the Tampa Bay Lightning. O’Brien will report to Vancouver and Ouellet will report to Manitoba.

Update 1:28pm PT:
In other transaction news earlier today, Cody Hodgson—who just signed his first pro contract yesterday—will be returned to junior for another year with Brampton in the OHL.