The St. Louis Cardinals have several potential trade candidates if they decide to sell before the July 31 deadline, including one who was recently linked to the hated Chicago Cubs. With the July 31 trade deadline eight days away, the Cardinals are 52-50 and trail the first-place Cubs and Milwaukee Brewers by 8 1/2 games in the National League Central, while dragging 3 1/2 games behind in the NL Wild Card race.