The Toronto Maple Leafs have traded centre Nazem Kadri, defenseman Calle Rosen, and Columbus’ 2020 third-round pick they got from Ottawa to the Colorado Avalanche in exchange for Tyson Barrie, Alexander Kerfoot, and a 2020 sixth-round pick. In terms of cash, Colorado retains 50% of Barrie’s $5.5 million cap hit, which expires at the end of the season.
Leafs acquire Barrie, Kerfoot, and 6th in 2020. Going to Avs is Kadri, Rosen, 3rd in 2020. Colorado retains 50% of Barrie's $5.5 million salary.
— John Matisz (@MatiszJohn) July 1, 2019
Long story short, the Maple Leafs downgrade their third-line centre in exchange for a massive upgrade to their defense.