Manny Banuelos is one of the players that is guaranteed to be gone. The White Sox have outrighted him to AAA Charlotte for the purpose of him a becoming minor league free agent at the end of the 2019 World Series. He is not going to be a member of the White Sox in 2020 and that is probably a good thing.
Although he gave it his all, he wasn’t very good in his few appearances for the White Sox. He had a record of 3-4 which is decent for the way he pitched. He had a 6.93 ERA, 1.836 WHIP, and a -0.4 WAR. Those numbers are pretty terrible for a guy in the MLB. It would be less than ideal to have him in the rotation if you are a team expecting to win. The 2020 White Sox are looking to be a division contender so below replacement level pitchers don’t really fit on the team anymore. There are also some other pitchers on their way back from injury so there also wouldn’t be any room anymore.
Innings eaters are a thing of the past and they want everyone in their rotation to go out there with a chance to win. Hopefully, Banuelos is able to continue his baseball career somewhere and he is able to find some success.