The condition on the trade will be met should Senyshyn play five NHL games with Ottawa before the end of the 2021-22 season and will result in Boston receiving a sixth-round pick in 2022 instead.
Senyshyn, a native of Ottawa, was the 15th overall pick by the Bruins in 2015. In 14 NHL games, he has one goal and two assists.
He has suited up 243 times in the AHL where he has tallied 110 points (59 goals).
The 24-year-old, who has worn an 'A' the last two seasons with Providence, has 19 goals in 51 games this season.