Leeds United have signed Gamba Osaka midfielder Yosuke Ideguchi on a four-and-a-half-year deal for an undisclosed fee.
The 21-year-old made his international debut for Japan in June 2017 and has won 10 caps, scoring twice.
He has been immediately loaned to Spanish second division strugglers Cultural Leonesa for the rest of the season.
United are sixth in the Championship, six points behind second-placed Derby County.