List of this summer’s top trade candidates & unrestricted free agents in your NHL rumor mill.  Summer of 2016’s top NHL trade candidates. TSN: Frank Seravalli lists this summer’s top-20 NHL trade candidates: 1. Ryan Nugent-Hopkins, Edmonton Oilers, 2. Tyson Barrie, Colorado Avalanche, 3. Kevin Shattenkirk, St. Louis Blues, 4. Edmonton Oilers’ fourth-overall pick in […]