Taijuan Walker, who had a very good year for the Mets in 2022 (29 starts, 3.49 ERA, 1.195 WHIP, 2.6 bWAR), was considered by the Cubs before Spring Training in 2020, when he was a free agent coming off two injury-plagued years with the Diamondbacks.
The Cubs, at the time, were willing to only offer a minor-league deal with money if he made the Opening Day roster. He wound up signing a one-year, $2 million deal with the Mariners, who were the team that originally drafted him back in 2010. Of course, the 2020 season got shortened by the pandemic and Walker wound up in Toronto, traded there at the deadline for a minor leaguer.