He’s handy with balls, but may use clubs (7)
I believe the answer is:
juggler
'he's handy with balls but may use clubs' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
This is all the clue.
Can you help me to learn more?
(Other definitions for juggler that I've seen before include "One keeping several things in the air" , "Circus performer" , "Balls-in-air entertainer" , "Conjuror" , "One performs tricks of manual dexterity" .)