| Free Agents | ||||||||
| PLAYER | POS | AGE | STATUS | 2020 TEAM | NEW TEAM | YRS | RK | DOLLARS |
| Alex Avila | C | 39 | FA | Twins | -- | 81 | -- | |
| Drew Butera | C | 42 | FA | Rockies | -- | NR | -- | |
| Curt Casali | C | 37 | Non-Tendered | Reds | -- | NR | -- | |
| Welington Castillo | C | 39 | FA | Nationals | -- | NR | -- | |
| Jason Castro | C | 38 | FA | Padres | -- | 67 | -- | |
| Robinson Chirinos | C | 41 | FA | Mets | -- | NR | -- | |
| Tyler Flowers | C | 40 | FA | Braves | -- | NR | -- | |
| Dustin Garneau | C | 38 | Signed | Astros | Tigers | NR | Minor Lg | |
| Bryan Holaday | C | 38 | FA | Orioles | -- | NR | -- | |
| Erik Kratz | C | 45 | FA | Yankees | -- | NR | -- | |
| PLAYER | POS | AGE | STATUS | 2020 TEAM | NEW TEAM | YRS | RK | DOLLARS |
| Sandy Leon | C | 37 | FA | Indians | -- | NR | -- | |
| Luke Maile | C | 35 | Signed | Pirates | Brewers | 1 | NR | $579,000 |
| Jeff Mathis | C | 43 | FA | Rangers | -- | NR | -- | |
| James McCann | C | 35 | Signed | White Sox | Mets | 4 | 14 | $40,600,000 |
| Yadier Molina | C | 43 | Signed | Cardinals | Cardinals | 1 | 29 | $9,000,000 |
| Josh Phegley | C | 38 | FA | Cubs | -- | NR | -- | |
| Wilson Ramos | C | 38 | Signed | Mets | Tigers | NR | -- | |
| J.T. Realmuto | C | 35 | Signed | Phillies | Phillies | 5 | 1 | $115,500,000 |
| Rene Rivera | C | 42 | FA | Mets | -- | NR | -- | |
| Austin Romine | C | 37 | FA | Tigers | -- | NR | -- | |
| PLAYER | POS | AGE | STATUS | 2020 TEAM | NEW TEAM | YRS | RK | DOLLARS |
| Kevan Smith | C | 37 | FA | Rays | -- | NR | -- | |
| Kurt Suzuki | C | 42 | FA | Nationals | -- | NR | -- | |
| Matt Wieters | C | 39 | FA | Cardinals | -- | NR | -- | |
| Tony Wolters | C | 33 | Non-Tendered | Rockies | -- | NR | -- | |
| Mike Zunino | C | 35 | Agreed | Rays | Rays | 1 | NR | $3,000,000 |