I don't know if David Hernandez has been mentioned already, but this proposal makes a lot of sense to me:
Red Sox Stats @redsoxstats 48m48 minutes ago
I wouldn't be surprised if Reds setup man David Hernandez ends up being the Sox top bullpen target. He's a good pitcher (dominant FIPs the last 3 years), does things the Sox like (misses bats in the zone, pitches up w fastball), and the price will be right ($1.3M left, FA to be).
Add Hernandez for a modest price, move Darwinzon Hernandez to the pen for the rest of the year and call him. Not sexy, but that’s another good pitcher and a high octane wildcard out in the pen. Makes it deeper and better. Hopefully Eovaldi stabilizes 5th spot to stop taxing pen.
As Red Sox Stats mentions, it's not sexy, but you don't need sexy to be good.