The Dodgers are making progress on an extension with manager Don Mattingly, and a deal is expected to be completed soon, tweets Ken Rosenthal of FOX Sports.

Mattingly is under contract through the 2014 season thanks to a $1.4MM option that vested when his Dodgers defeated the Braves in the NLDS. However, Mattingly made his desire for a multiyear contract known shortly after the season in a surprisingly candid press conference.

Mattingly has led the Dodgers to three straight winning seasons, including an NL West Division Championship and an NLCS berth in 2013. His job was called into question earlier in the season when the Dodgers were struggling despite the team's gaudy payroll, but Mattingly silenced critics by helping the Dodgers to a dominant 42-8 run that placed them firmly atop the division. The deal has been in the works for some time now, as ESPN Los Angeles' Ramona Shelburne reported back in November that the two sides were discussing a multiyear deal.