Paredes signed a one-year deal worth $1.2 million with the Chiba Lotte Marines the Japan Times reports.
Paredes has elected free agency.
Paredes was outrighted to Triple-A Lehigh Valley on Friday.
Paredes will start in left field and bat second in the order Sunday against the Mets.
Paredes hit a game-winning, pinch-hit single in the 13th inning Friday versus the Marlins, sending the Phillies home as 4-3 winners.
Paredes is out of the lineup Friday against the Braves.
Paredes went 3-for-4 with a double, a homer and three RBI in a 7-6 victory over the Rockies on Sunday.
The Phillies optioned Cody Asche to Triple-A, meaning Paredes spot on the roster is safe for now, Matt Gelb of the Philly Inquirer reports.
Paredes could lose his roster spot when Peter Bourjos returns from the disabled list, Jim Salibury of CSN Philadelphia reports.
Paredes hit a solo homer in his only at-bat Sunday at the Braves.