It's not a small sample size either, as the Leafs have been without Muzzin for a month. With and his $5.625M cap hit on LTIR, the Leafs have a little over $2M to play with (more if they trim the roster down) and if they can sustain their defensive play to the trade deadline, they could and should go after a top 6 forward to provide them with more scoring in the playoffs.
Patrick Kane is going to be a costly asset and a trade for him could potentially involve a top prospect like
Matthew Knies so that's unlikely, but adding someone like
Max Domi, Ryan O'Reilly or
Tyler Bertuzzi would give the Leafs some additional scoring that Keefe can spread throughout the lineup and possibly load up a line with
Auston Matthews,
Mitch Marner and
William Nylander or
John Tavares if needed without putting all his eggs in one basket.