Career
Playing career
Bunyan played as a striker in Belgium for Racing Club de Bruxelles (where he scored 150 goals in 158 matches and in France for Stade Français. He was the topscorer of the Belgian First Division in 1912 and 1914. He also competed for Great Britain at the 1920 Summer Olympics.
Managerial career
Bunyan managed French side Bordeaux between 1945 and 1947.
Following his coaching experience, Bunyan wrote a book in French named Le football simplifié, with the help of Jules Rimet.