Aide can provide such a concept (4)
I believe the answer is:
idea
'such a concept' is the definition.
(I've seen this before)
'aide can' is the wordplay.
'can' indicates anagramming the letters (I've seen 'canned' mean this (canned can mean drunk)).
'aide' anagrammed gives 'IDEA'.
'provide' is the link.
(Other definitions for idea that I've seen before include "Clue" , "Purpose" , "Thought, conception" , "Aim" , "Something imagined in the mind" .)