Rindell, 22, was selected in the sixth round (177th overall) by the Maple Leafs in the 2020 NHL Entry Draft. In April, after parts of three seasons in Finland's top division, Liiga, with Jukurit and Karpat, Rindell signed a two-year entry-level contract with the Maple Leafs.
The Helsinki native split his time this season between the AHL's Toronto Marlies and ECHL's Newfoundland Growlers. In six games with the Marlies, he had no points, two penalty minutes and was a minus-two, while in five games with the Growlers, Rindell had four points, two penalty minutes and was a plus-four.