Jesús Luzardo
The Orioles (and a lot of teams) have been connected to Luzardo dating back to the offseason, when rumors ran wild about the Marlins possibly trading him. It made a lot of sense at the time, as he was coming off a 32-start season and seemed poised to put up good numbers this season.
So far this season, it hasn't clicked just yet. Though 56 innings across 10 starts, he has a 5.30 ERA, 1.25 WHIP, and 3.87 FIP, with a sub-optimal 81 ERA+, though he has done a solid job limiting home runs.
What he's done pretty well this season is miss bats, as evidenced by an 83rd percentile whiff percentage rating, though he's in the 50th percentile in strikeout percentage altogether. There has not been a lot that's gone right for Luzardo this season, but not a lot has gone right for the Marlins either, so maybe a change of scenery gets him back on track.
Just like the offseason, he'll probably cost a good amount to get, but the price could be lowered a bit thanks to the challenging start to the season he's had. With a few more seasons of team control attached to any deal, this would be a futures move as well for the Orioles, and it could pay off in spades.