The skillful winger started his career in Germany with Hamburger SV and impressed – earning him a €10 million move in 2013 to Bundesliga rivals Bayer Leverkusen.
Heung-min caught the eye in both Europa League and Champions League action with his attacking, goalscoring performances from either flank and that convinced Mauricio Pochettino’s men to splash out £22 million on his signature last summer – making him the most expensive Asian player in history.
Here’s who else is celebrating:
1941 – Dario Gradi – former Crewe manager and current director of football (75).
1960 – Mal Meninga – Australia head coach and former Kangaroos centre and captain (56).
1971 – Neil Jenkins – former Wales fly-half and current assistant coach (45).
1972 – Sourav Ganguly – former India cricket captain (44).
1976 – Dame Ellen MacArthur – retired British sailor who broke the world record for the fastest solo circumnavigation of the globe in 2005 (40).
1980 – Robbie Keane – Los Angeles Galaxy striker and Republic of Ireland captain (36).
1981 – Anastasia Myskina – Russian winner of 2004 French Open (35).