Tottenham signed the 20-year-old from South Korean club Gangwon FC in the summer of 2024, and he has spent almost his entire time in England out on loan since, first at Queens Park Rangers in January 2025, then at Portsmouth, and most recently at Coventry City. He has yet to make a senior appearance for Spurs' first team.
The move to Westerlo follows a pattern the club has used before: Luka Vuskovic spent time developing at the Belgian club before establishing himself back in England, and Tottenham are hoping Yang can follow a similar path after a mixed run of loan spells.
His time at Portsmouth was the most productive, with manager John Mousinho publicly praising his impact, but his stint at Coventry yielded limited game time as Frank Lampard's side sealed the Championship title without leaning on him.
Yang made 38 appearances for Gangwon in the K League 1 during the 2024 season, scoring 12 goals and adding six assists before becoming the first high school student in South Korean football to sign a professional contract that summer.
He has continued to be involved with the senior national team since his move to England, and Tottenham's decision to send him to a club with a track record of developing their young players reflects continued belief in his long-term potential, even if regular first-team football at Spurs remains some way off.
Yang's contract with Tottenham runs until the summer of 2030, giving the club time to assess his progress at Westerlo before deciding on the next step in his development.
Reports in Belgium suggest the loan does not include an option for a permanent transfer, meaning Yang is guaranteed to return to Tottenham once the season concludes regardless of how the spell unfolds.
Spurs have shown patience with the winger despite three loan moves in his first eighteen months at the club, a reflection of how highly the recruitment staff who signed him from Gangwon still rate his ceiling as a player.