The deal is worth $735,000 in the NHL and $70,000 at the AHL level.
“Filip’s a competitive player who works hard,” said Senators general manager Pierre Dorion in a press release.
“He has applied himself to becoming an important player for us in Belleville. We’re confident that same work ethic will be equally as effective for him as he strives to become the same type of player in Ottawa.”
The 23-year-old, who was selected the Senators in the second round of the 2015 NHL Draft, split the 2019-20 season between Ottawa and its farm team in Belleville, recording six points in 31 NHL games and 22 points in 37 AHL contests.
Over the course of his career, Chlapik has put up 11 points in 56 NHL games.