The Flames are filling a hole on their blue line by bringing in Nesterov, who spent the last three seasons in the KHL. The defenseman captained Team Russia to a gold medal at the 2018 Olympics and has 132 games of NHL experience with the Lightning and Canadiens.

Leivo has proven over his career that he can contribute on both ends of the ice. He's a versatile player who can fill in on the top line or bottom six, and he's now set to join his third Canadian team in Calgary after stints in Vancouver and Toronto.

Kahun has just two NHL seasons under his belt but showed during his time with the Penguins and Blackhawks that he's more than capable. The German forward is set to reunite with Leon Draisaitl in Edmonton, with whom Kahun had immaculate chemistry.

The 2012 third overall pick finds himself on his fifth NHL team after landing with Ottawa. The 26-year-old continues to show flashes of his potential on the ice and could be in a good spot to rejuvenate his career as a potentially vital piece of the Senators' rebuild.