4. Carlos Carrasco
Another risky depth option would be Carlos Carrasco, who is playing out the last year of a four-year contract in a morbid fashion. The 36-year-old has an ugly 6.80 ERA in 90 innings pitched this year with the Mets. I'm not a huge fan of this option considering Carrasco's major struggles this year (opponents are hitting .310 against him) but he could be useful as the fifth starter and he sure doesn't lack experience.
Carrasco made his MLB debut way back in 2009 so he is a seasoned veteran with a handful of postseason starts under his belt. Interestingly, Carrasco spent the best seasons of his career in Cleveland from 2014-2018, when Cubs' starting catcher Yan Gomes was the primary backstop for the Guardians. Perhaps a little reunion with his old battery mate is what Carrasco needs for a late-career swan song with the Cubs.