The Mariners already had the second-most available international slot money to use toward the two-way Japanese standout, but they closed that gap a bit with Wednesday's deal. Texas has about $3.5 million in slot money, with the Mariners now bumping their total up to $2.55 million.
Banuelos was the Mariners' No. 10 prospect, per MLBPipeline.com, after being selected in the fifth round of the 2017 Draft out of Long Beach State.
The 21-year-old hit .236 with four home runs and 26 RBIs for Class A Short Season Everett and was selected to play in the Northwest League All-Star Game.