The Vancouver Canucks have signed defenceman Sami Salo to a four-year contract extension. In keeping with club policy, terms of the deal were not disclosed.''We are pleased to have agreed to a long-term extension with Sami today,'' said Canucks Senior Vice-President and General Manager Dave Nonis. ''Sami is an elite defenceman who compliments our group very well. We are confident that he will continue to perform at the high level he has established for himself over the next four seasons.''