Precocious member of the team (7)
I believe the answer is:
forward
'precocious' is the definition.
(similar in meaning)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for forward that I've seen before include "Brazen" , "Presumptuous" , "left-winger, maybe" , "Bold, overfamiliar" , "going on" .)