Edgin underwent Tommy John surgery last March 17 and missed the entire 2015 season.
The Mets still are in sound shape in terms of a lefty specialist until Edgin returns. Jerry Blevins re-signed with the Mets on Dec. 15.
Blevins, acquired from the Washington Nationals on the eve of last season for Matt den Dekker, twice suffered a fractured left forearm in 2015, but has since recovered. Batters were 0-for-15 against him -- lefty batters 0-for-14 -- last season before the first of the two injuries, when he was struck by a line drive off the bat of Miami's Dee Gordon.