When looking at the big picture, the Jake Allen trade took some time to finalize, but it has been worthwhile. Finally, the Canadiens are playing with two goalies, and we can officially turn the page.
Indeed, teams are allowed to retain salary on three players. There is no more room since Kent Hughes is retaining salary for Jake Allen, Jeff Petry, and Joel Edmundson.
However, with players like Josh Anderson, Joel Armia, Brendan Gallagher, and David Savard likely to be available at the next trade deadline, maybe even before, not being able to retain salary could work against Hughes, as it did with Pearson.