The deal is worth $5.6 million ($2.8 million AAV).
Kyrou, 23, played in 55 games with the Blues during the 2020-21 season, recording 14 goals and 21 assists (35 points).
In 99 career NHL regular-season games, the Toronto, Ontario native has posted 19 goals and 28 assists (47 points).
The Blues have recently reached new contracts with restricted free agents Ivan Barbashev, Pavel Buchnevich and Dakota Joshua. Other restricted free agents left to sign are Zach Sanford and Robert Thomas.
