Acce s the Mets beat like never before Join Post Sports+ for exciting subscriber-only features, including real-time texting with Mike Puma about the inside buzz on the Mets. The Mets plan to have a new bullpen option available Saturday. Jose Castillo, a left-hander who pitched to underwhelming results before he was designated Grant Hartwig Jersey for a signment by Arizona, is scheduled to join the Mets ahead of their game against the Yankees. The Mets for cash considerations. Castillo, who is without minor league options, pitched to an 11.37 ERA in five appearances for the Diamondbacks this season. Jose Castillo throws a pitch during the Diamondbacks game on May 3. Getty Images Explore More Team bra s on Friday hadnt ruled out the po sibility that Genesis Cabrera would remain on the roster to give the Mets two lefties in the bullpen. Cabrera has thrived in a hybrid role short relief and multiple innings. He entered Friday with a 1.80 ERA in four appearances for the club. Dedniel Nez, Huascar Brazobn and Max Kranick all have minor league options remaining. The Mets have been on the lookout for lefty relief since losing A.J. Minter and Danny Young for the season. CHECK OUT THE AND Minter . Young . Jose Castillo throws a pitch during the Diamondbacks game on May 2. Bill Streicher-Imagn Images Frankie Montas was scheduled to throw a live batting practice se sion in Brooklyn. The right-hander, according to manager Carlos Mendoza, will throw at least one additional live batting practice within the next few days before hes considered for a minor league rehab a signment. Delivering insights on all things Amazins Sign up for Inside the Mets by Mike Puma, exclusively on Sports+ Thank you By clicking above you agree to the and . Enjoy this Post Sports+ exclusive newsletter! Montas opened the season on the injured list after he was diagnosed with a high-grade lat strain early in spring training. Sean Manaea has a series of throwing se sions from a mound ahead, according to Mendoza, before he is scheduled to begin up and downs to simulate pitching multiple innings. The left-hander is rehabbing from an oblique strain that has sidelined him since spring training. Paul Blackburn was set to start for Double-A Binghamton on Friday in a penultimate rehab outing before hes considered for a return from the injured list. The right-hander has been rehabbing from right knee inflammation. Tug Mcgraw Jersey