Gilmour was recovering from a knee injury suffered in his first game back with the Maple Leafs last March. According to TSN, new general manager John Ferguson made it known that the former captain is not in the Leafs' plan for next season.
The Ontario native made his NHL debut with the St. Louis Blues in 1983. He recorded 450 goals and 964 assists in 1,474 games, and won one Stanley Cup with the Calgary Flames in 1989.
Four years later, he was awarded the Selke Trophy as the league's best defensive forward.
Gilmour was drafted by the Blues in the seventh round of the 1982 draft and spent five seasons on St. Louis. He then was dealt to the Flames, winning the Stanley Cup in his first season.
Gilmour, who set Toronto records in 1992-93 with 95 assists and 127 points, helped the Maple Leafs reach the Western Conference finals in 1993 and '94.
He also played for New Jersey, Chicago, and Buffalo. He had 450 goals and 964 assists in 1,474 games in his career.