Patrick Sandoval is a trade target that I have not heard many people discuss this offseason but he could provide some intrigue for the Cardinals.
Sandoval had a bit of a down 2023 season, posting a 4.11 ERA in 144.2 innings of work. From 2021-2022 though, he threw 235.2 innings with a 3.17 ERA, with a 132 ERA+. He'd be a quality left-handed starter to add to the rotation but does not qualify as a number two starter in my opinion.
I like Sandoval, but I'm not sure he's the pitcher the Cardinals should be sending a package for. He has three years of control and is a nice starter, but I'm not sure what his ceiling truly is.
Ivan Herrera, Gordon Graceffo, Travis Honeyman, and Alec Burleson are a high price to pay for pitching, and while I don't think it's an outrageous asking price, I do think it's not the move they should moving their assets for. I would be moving assets to go after a true top-of-the-rotation talent, not someone whose value comes a lot from their control.
I could see the Angels being interested in something like this as they look to rebuild as an organization, but for St. Louis, I'm not a fan.