He may be a sport (6)
I believe the answer is:
pastor
'he' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'may be a sport' is the wordplay.
'may be' indicates anagramming the letters.
'a'+'sport'='asport'
'asport' anagrammed gives 'PASTOR'.
Can you help me to learn more?
(Other definitions for pastor that I've seen before include "Minister of religion" , "One with a flock (of people)" , "A sport (anag)" , "Minister; shepherd" , "Flock's leader" .)