Without any proof other than speculation on my part.
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I believe Treliving convinced Murray to sit out last year on Robidas Island on LTIR and not play to help the Leafs locked in Cap Hell, and now rewarded him by giving him a chance to continue his career comeback at $875k league minimum salary.
Nudge Nudge Wink Wink ...
At league minimum $875 he can provide value to the Leafs as depth #3, and can even play with the Marlies until needed (If needed). Martin Jones played that role well at his $800k last year.