The Mets have acquired Nittoli from the Cubs, Anthony DiComo of MLB.com reports.
Nittoli had opted out of his minor-league contract with the Cubs but got shipped to another organization before reaching free agency. He will be on the 40-man roster, but it's not clear whether the Mets intend to put him on the big-league roster or assign him to Triple-A Syracuse. Nittoli holds a 3.48 ERA with 22 strikeouts in 20.2 innings this season at the Triple-A level.