2:39pm: Heyman reports that Nieves is guaranteed $1.125MM and can earn up to $500K in performance bonuses (Twitter link).

THURSDAY, 1:36pm: The Phillies announced Nieves' deal, which ESPN's Jayson Stark notes is a Major League pact.

TUESDAY: The Phillies are set to sign catcher Wil Nieves, according to Jon Heyman of CBSSports.com (on Twitter). Nieves is represented by MDR Sports Management, as shown in the MLBTR Agency Database.

Nieves, 36, hit .297/.320/.369 in 206 plate appearances for the Diamondbacks last season. Arizona retained the veteran with a one-year, $800K deal right around this time last year. For his career, Nieves owns a .242/.283/.314 across ten big league seasons.