Chong bergabung dengan barisan pemuda klub Eredivisie Feyenoord berusia 10, dan telah menarik minat beberapa klub Liga Premier usia 16 tahun.<ref>{{Cite news|url=https://www.the42.ie/tahith-chong-manchester-united-2742470-Apr2016/|title=Sixteen-year-old Feyenoord wonderkid confirms Manchester United move|date=29 April 2016|work=The 42|publisher=TheJournal.ie|access-date=11 January 2019}}</ref> Pada bulan September 2014, Chong ikut serta dalam Piala Premier Manchester di Carrington Training Ground, di mana ia ditemukan oleh pencari bakat Manchester United.<ref>https://www.manchestereveningnews.co.uk/sport/football/football-news/man-utd-chelsea-tahith-chong-15657423</ref> Pada awal 2016, Chong hampir bergabung dengan Chelsea.<ref>{{Cite news|url=https://www.goal.com/en/news/revealed-how-man-utd-snatched-chong-from-under-the-nose-of/147b2ubukyqgw1my7g45uhqehp|title=Revealed: How Man Utd snatched Chong from under the nose of Chelsea|last=Burton|first=Chris|date=11 January 2019|website=Goal.com|access-date=11 January 2019}}</ref>
