David Robertson, whom the Mets previously expressed interest in, agreed to a deal with the Phillies on Thursday.
Robertson, 33, signed a two-year deal guaranteed at least $23 million, per MLB.com's Mark Feinsand. He will earn $10 million in 2019, $11 million in 2020 with a $12 million club option (with a $2 million buyout) for 2021.
Robertson, who was representing himself throughout negotiations, also received interest from the Yankees and Red Sox throughout the offseason.
The Mets had significant interest in the right-hander early in the offseason but following the additions of Edwin Diaz and Jeurys Familia, the interest in Robertson waned as the bullpen depth became less of a priority.
Despite the additions of Diaz and Familia, some still believed the Mets could still make room for the 33-year-old.
Robertson, who spent the first seven years of his career with the Yankees, was re-acquired by the Bombers mid-way through the 2017 season in a trade with the White Sox.
The right-hander is coming off a season in which he went 8-3 with a 3.23 ERA (2.97 FIP) and 91 strikeouts in 61.2 innings, or 11.8 K/9 ratio.