Hayes, who is a pending unrestricted free agent and can sign with any team July 1, was traded to the Jets by the New York Rangers on Feb. 25 for a first-round pick in the 2019 draft, forward Brendan Lemieux and a conditional fourth-round selection in the 2022 NHL Draft.
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The 27-year-old center had 13 points (five goals, eight assists) in 20 games for Winnipeg and 55 points (19 goals, 36 assists) in 71 regular-season games. He had three points (two goals, one assist) in six Stanley Cup Playoff games for the Jets, who lost to the St. Louis Blues in the Western Conference First Round.
"By gaining the rights to Kevin at this time, it provides us with an opportunity to negotiate with him prior to July 1 when he is due to become an unrestricted free agent," Flyers general manager Chuck Fletcher said.