The Seattle Kraken used their exclusive negotiating window with unrestricted free agents to start building their roster ahead of Wednesday night's NHL expansion draft reveal.

Sources confirmed to ESPN that Edmonton Oilers defenseman Adam Larsson has agreed to a four-year, $16 million deal with the Kraken and that Florida Panthers goalie Chris Driedger has agreed to a three-year, $10.5 million deal with Seattle.

Both players will count as Seattle's selections from those teams in the expansion draft.