Malgin was originally drafted by the Florida Panthers in the fourth round (102nd overall) of the 2015 NHL entry draft. After playing parts of four seasons for the Panthers, Malgin was traded to the Leafs in exchange for power forward
Mason Marchment on February 19th of 2020. Marchment went on to establish himself as a top six forward in Florida, before signing a four year $18 million contract with the Dallas Stars this offseason. Meanwhile, Malgin played eight games with the Leafs after the trade, recording zero points.