The deal sees the Golden Knights send Nicolas Roy to the Toronto Maple Leafs in exchange for Marner, who will avoid free agency by signing an eight-year, $96 million contract in Vegas. Marner will run the Golden Knights $12 million per year, which is less than some expected him to fetch on the open market.

Tracking all of the latest NHL trades, including the Toronto Maple Leafs sending Mitch Marner to the Vegas Golden Knights.

The Maple Leafs have dealt forward Mitch Marner, 28, an accomplished goal scorer who just wrapped up a six-year restricted deal in Toronto, to the Vegas Golden Knights on the eve of free agency, sources told ESPN's Emily Kaplan on Monday afternoon.