Of all the salary arbitration cases in the NHL this summer, none is more compelling than the one involving William Karlsson and the Golden Knights. Karlsson is seeking $6.5 million annually in arbitration. The Knights countered with an offer of $3.5 million annually. Karlsson’s arbitration hearing is scheduled for Saturday in Toronto. During the hearing, the player and team present evidence. The arbitrator then has 48 hours to render a decision, and the team decides on a one- or two-year contract. Karlsson’s agent and the Knights can continue to negotiate a new contract prior to the hearing.