He’s Hoy-Jun Park, and Bloom just grabbed him from the Pirates in exchange for an 18-year-old you’ve never heard of.
Park originally signed with the Yankees as a 17-year-old international free agent way back in 2014. It’s actually pretty rare for Korean teenagers to sign with Major League clubs. Korean ballplayers, unlike their counterparts in Latin America, have the option of playing in a high-level, financially-lucrative domestic league. But Park decided to head to the states, was considered the best international free agent out of Asia in 2014, and received a $1 million signing bonus from the Yanks.