 As a footballer, Kallon played as a midfielder for Vanspor (1994–1995) in Turkey, Sportul Studenţesc București (1995–1996) in Romania, and PSM Makassar, Persikota Tangerang and Persebaya Surabaya (1996–1999) in Indonesia.Kallon was capped several times for Sierra Leone between 1990 and 1998, and scored two goals in a 5–1 win against Niger in order to qualify Sierra Leone qualify for the 1996 African Cup of Nations in South Africa.After retiring as a player, Kallon also coached the Sierra Leone U-17 side in the 2003 FIFA U-17 World Championship in Finland after managing a second place finish in the 2003 African U-17 Championship.