Tottenham Hotspur has signed 20-year-old Japan international defender Kota Takai from J-League side Kawasaki Frontale for a fee of around five million pounds (6.8 million U.S. dollars).

The Japan international, who has four caps under his belt so far in his career, rose up through Kawasaki Frontale’s academy ranks and was a regular for them at various different youth levels. He broke ...