Andrew Suarez
Andrew Suarez is a veteran reliever who found some success with the Giants between 2018-2020 but has not impressed in his return to the big leagues this season.
In 24 innings for the Cardinals, he has a 7.50 ERA and has mostly been relegated to mop-up duties or eating innings when the rotation does not go deep into games. While Suarez may be able to be a contributor for someone in 2024, I do not see that being the Cardinals.
JoJo Romero, Zack Thompson, Matthew Liberatore, Drew Rom, and Connor Thomas are internal arms that I expect to get bullpen looks over Suarez (although a lot of them will factor into the rotation as well), and I bet they'd prefer to bring in an external left before relying on Suarez in any meaningful way.