Hyman suffered a torn ACL in Game 4 of the club's first-round playoff series against the Boston Bruins this past spring. He stayed in the lineup for the remainder of the seven-game series, unaware he had suffered the major knee injury.
Hyman was given a six-month recovery timetable after undergoing surgery on April 29.
The 27-year-old set career highs with 21 goals and 41 points in 71 games last season. He's expected to take his familiar spot at left wing alongside John Tavares, with Kasperi Kapanen likely rounding out the line while Mitch Marner remains sidelined with an ankle injury.