The Mets New York Mets will have a new closer next season, and Francisco "K-Rod" Rodriguez want to have that role. Rodriguez's agent told The Post yesterday that Rodriguez is excited about the Mets and considers them "a good fit" among the four teams supposedly hottest in pursuit of the closer. "K-Rod's pitched in high-pressure games, he's been in a pretty big market since he was 19 years old and thrives on it," said agent Paul Kinzer, who wouldn't name the other three clubs interested in his client. "New York and the Mets are very attractive to him."