Forward David Clarkson will be making his season debut this week after he serves his full 10 game suspension, while right wing Nikolai Kulemin, left wing Frazer McLaren and defenseman Mark Fraser are expected to return from injury in November.
The Leafs will need to make room in order to accommodate all three players over the next few weeks.
It's possible the team will send winger Josh Leivo back down to the AHL, but he has performed well during time with the big club and might have earned a full-time spot.
The Leafs could also send defenseman Morgan Reilly back to his WHL club, but he has also performed well for the Leafs.
Head coach Randy Carlyle and GM Dave Nonis has some serious matters to resolve. If the team doesn't send Reilly back to the WHL, the Leafs will presumably use him in a top-four role, leaving the team with an extra defenseman.
Nonis has entertained calls for some of his players, like defensemen Carl Gunnarsson, Cody Franson and Jake Gardiner, but a deal involving any of these blueliners appears unlikely, at this point in time.
The Leafs are also willing trade veteran John-Michael Liles, who is currently playing in the AHL, and absorb some salary in return.