The Habs have traded away Sean Monahan a few weeks ago, which was a big loss for their already thin centerline.
With Christian Dvorak injured for the remainder of the season, they really needed reinforcements in that area.
The Canadiens' management often took on players who needed a breath of fresh air, such as Kirby Dach, Alex Newhook, Justin Barron, and last year's loan Denis Gurianov. White is in the same kind of situation, having no points in 11 games with the Penguins this season.
We'll see if Marty St. Louis can help him turn his season around.