Please answer the following question: Robert Bobby Carroll (born 13 May 1938) was a Scottish footballer most notable for scoring the first goal in European competition for Celtic.Bobby provisionally signed for Celtic on 22 September 1957 from Irvine Meadow XI FC however he was left with Irvine Meadow for season 1958/59 during which he scored 75 goals resulting in him being voted Junior Player of the Year in 1959. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Athlete