Suggestion from coach in team (4)
I believe the answer is:
hint
'suggestion' is the definition.
(I know that suggestion can be written as hint)
'from coach in team' is the wordplay.
'from' indicates a hidden word.
'HINT' is hidden within 'coach in team'.
(Other definitions for hint that I've seen before include "A dash" , "CRT screen coating" , "Small trace; clue" , "Thin sort of slight indication" , "Imply, suggest" .)