MIAMI -- The Marlins intend to retain as much continuity as possible on manager Don Mattingly’s coaching staff, but at least some changes will be made.

MLB.com has learned catching coach Brian Schneider and bullpen coach Dean Treanor will not be part of the 2020 staff.

The Marlins have not confirmed any staff changes.

Schneider and Treanor each were on one-year contracts, which expired at the end of the season.

Schneider, 42, spent four seasons as Miami’s catching coach, and he played a part in the development of All-Star catcher J.T. Realmuto, who is now with the Phillies.

A former big league catcher with the Montreal Expos/Washington Nationals, Mets and Phillies, Schneider has been with the Marlins since Mattingly became manager in 2016.

Treanor, 71, served as bullpen coach the past three seasons, and he has also managed in the Marlins’ system. He was the skipper of Triple-A Albuquerque in 2003 and from ‘05-08.

The Marlins intend to replace both positions.

Whoever is the 2020 pitching coach will have a say in the hiring of the next bullpen coach. Bringing back Mel Stottlemyre Jr. remains a possibility.

Stottlemyre completed his first season as Miami’s pitching coach and was the Mariners pitching coach for three seasons prior to 2019. He may have other coaching options aside from the Marlins.

With Schneider and Treanor not returning, at least three members from the 2019 staff will not be back.

Recently, bench coach Tim Wallach announced that he would not be returning because he wanted to spend more time with his family on the West Coast.

Wallach, 62, had been Mattingly’s bench coach for four seasons in Miami, and nine seasons overall, including his previous tenure with the Dodgers.

A resident of Yorba Linda, Calif., Wallach told MLB.com recently that he is not retiring. He would like to remain in the game, but he is looking for opportunities closer to home.

The Marlins are hopeful of retaining several members of the 2019 staff, including first-base/infield coach Trey Hillman, who previously was a bench coach for Mattingly in Los Angeles. Third-base coach Fredi Gonzalez has been on Mattingly’s staff the past three seasons.

At the end of the regular season, Mattingly returned to Miami and has been involved in the process of selecting staff, before he returned to his home in Evansville, Ind.

Every member of the 2019 staff was on a one-year contract.

The rest of the 2019 staff included interim hitting coach Jeff Livesey, assistant hitting coach Eric Duncan and bullpen coordinator Rob Flippo.