The 22-year-old has played 14 games for Montreal this season, tallying three assists. Across 185 NHL games, all with the Canadiens, the Woodbridge, Ont., native has four goals and 34 points alongside 36 penalty minutes.
He claimed gold at the 2018 World Juniors with Canada and won an OHL Championship in 2016 with the London Knights.
Mete will wear no. 98 for the Senators and is eligible to play tonight against Winnipeg.
