Rich Hill
Admittedly, the list of former Dodgers that make sense for the team and could actually be traded this season is not that long. Someone like Alex Wood would be great to bring back to LA but there's no reason for the San Francisco Giants to even consider a move like that.
While someone like Wood might be off the table, the Dodgers could get another funky-throwing southpaw via trade in Rich Hill. Despite being well into his 30s when he was a member of the Dodgers, Hill is still spinning it at the big-league level and is a quality arm.
The 43-year-old veteran is sporting a 4.34 ERA, 1.37 WHIP and 8.2 K/9 this season with the Pittsburgh Pirates. While those numbers aren't amazing, it's far better than the alternative in LA, which is Noah Syndergaard, Michael Grove, or a bullpen game.
Hill is someone who can simply be an innings-eater for the Dodgers during the regular season with the potential to transition to the bullpen in October. Having his funky southpaw delivery off the heels of a hard-throwing right-hander like Dustin May or Bobby Miller would be extremely hard to pick up for opposing teams.
Despite his age, Hill has been incredibly reliable in recent years. He made 31 starts in 2021, 26 last season, and 15 so far this year. Hill's best years were with the Dodgers, and while that version of him may have sailed, he can still be a quality option down the stretch for a cheap price.