The biggest hurdle for the next GM revolves around the "Core Four."
Auston Matthews,
Mitch Marner,
John Tavares, and
William Nylander make up this talented group, eating up a staggering 42% of Toronto's salary cap. To add to the complexity, Matthews and Nylander are entering the final year of their contracts, meaning they may not return next offseason. With that in mind, Toronto's next GM may have to look at all of their options with these star players.