The Vegas Golden Knights are acquiring star forward Mitch Marner from the Toronto Maple Leafs in a sign-and-trade, The Athletic and TSN reported Monday.

Marner is signing an eight-year, $96 million contract ($12 million average annual value) with Toronto as part of the move. The Leafs were the only team that could sign the pending unrestricted free agent to an eight-year pact.

It was not yet known what the Maple Leafs would get in return in the trade.

Marner, 28, was seen as the No. 1 player in the upcoming unrestricted free agent class. He has spent his entire nine-year NHL career in Toronto, which selected him fourth overall in the 2015 draft.

Marner has career totals of 221 goals and 520 assists (741 points) in 657 games for the Leafs. He is coming off a career year that saw him total personal bests of 75 assists and 102 points in 81 games.