Knies was drafted by the Leafs 57th overall in the 2021 NHL draft. The 19-year-old played for the University of Minnesota last season, with 15 goals and 33 points in 33 games. The Leafs were hoping he would decide to make the jump to the NHL this season, but he ultimately decided to return to the University of Minnesota for another season. Knies is eligible to join the Leafs in the spring once the NCAA season ends should he so choose, and that would be right in time for a playoff run.
Knies took part in summer development camp with the Leafs in July and looked like a man among boys during the initial practices. He didn't stand out as much during the scrimmages, but much of Knies' game is built around physical play and finishing checks. He wasn't about to run over his teammates during scrimmage play at a summer prospect camp, so it's no wonder why he didn't exactly stand out.