Exceptional talent may be hidden (6)
I believe the answer is:
latent
'be hidden' is the definition.
(thesaurus)
'exceptional talent' is the wordplay.
'exceptional' indicates anagramming the letters.
'talent' is an anagram of 'LATENT'.
'may' acts as a link.
(Other definitions for latent that I've seen before include "Inactive - potential" , "Potentially existing but not presently evident" , "Existing but not yet active, say talent" , "Potential but not active" , "Hidden, dormant" .)