"It's a burden off my shoulders and it's something that I don't have to think about when I go out and pitch," Niese said. "I can just go out and pitch and have fun and help the team win."
The five-year deal, which the Mets plan to announce on Saturday, is worth $25.5 million with two team options, potentially raising the value as high as seven years and $46 million. Niese will undergo a physical on Friday before the Mets make his deal official the following day.
Set to start the third game of the season on Sunday, Niese finished 11-11 with a 4.40 ERA last year, missing the final month of the season with a right intercostal strain.