Liljegren was designated as “unfit to play” after missing the team’s first skate of training camp. He was the only player missing from the morning session.
Liljegren made his NHL debut this season, registering an assist in 11 games. In 40 games with the AHL’s Toronto Marlies, the 21-year-old had five goals and 30 points.
Hollowell appeared in 34 games with the Toronto Marlies in 2019-20, putting up 12 points, while adding 13 points in 19 games in the ECHL with the Newfoundland Growlers. The 21-year-old was selected by the Leafs in the fourth round of the 2018 NHL Draft.
The Maple Leafs got training camp underway on Monday for the NHL’s return to play, and are scheduled to play their first game of the qualifying round against the Columbus Blue Jackets on Aug. 2.