NHL free agency begins July 1 and Avalanche general manager Joe Sakic said the club will be “more aggressive” — which almost certainly means marquee names will be recruited. A year ago, Sakic added secondary role players in forward Matt Calvert and defenseman Ian Cole. This year, expect Sakic to attempt to lure some of the top free-agent forwards — including my top-rated guy, Jeff Skinner. Skinner, who turned 27 last month, is coming off a career-high 40-goal season for a bad team.