Seattle apparently offered Carlos Santana more money than Cleveland, so they appear interested in spending at 1B.
They will probably try to re-sign Justin Turner next. If that doesn't work out, I could see some potential interest in Hoskins. Dipoto likes to unload dead contracts, which would make him potentially interested in clearing Haniger's money and opening up that roster spot.
Locklear looked overmatched by MLB pitching in 2024, but he's young and likely projects for a Rowdy Tellez-like career. He's currently considered the 10th ranked prospect in Seattle's system.
Personally I think Seattle would prefer to send more cash back and/or a lower ranked player than Locklear. In which case I think the Brewers would rather just eat the Hoskins contract since they need to get a 1B back and Haniger is entirely dead money, he would never actually play for the Brewers.