The Mariners probably need a third baseman more than another outfielder with the likely 2025 returns of Julio Rodriguez, Randy Arozarena, Victor Robles and Luke Raley.
Before this season ZiPS gave Wilyer Abreu and Brett Baty similar three-year WAR projections:
https://www.fangraphs.com/players/wilyer-abreu/23772/stats?position=OF#zips-3-year-projections
https://www.fangraphs.com/players/brett-baty/26123/stats?position=3B#zips-3-year-projections
Baty is five months younger than Abreu but may have one fewer year of team control depending on his service time calculation.
Going back to Baseball Trade Values in late 2023, the trade values of Abreu and Baty were nearly flipped from their current values. The BTV site is highly volatile.