Advise if Tony is spinning (6)
I believe the answer is:
notify
'advise' is the definition.
('notify' can be a synonym of 'advise')
'if tony is spinning' is the wordplay.
'is spinning' is an anagram indicator.
'if'+'tony'='iftony'
'iftony' anagrammed gives 'NOTIFY'.
(Other definitions for notify that I've seen before include "No one" , "Formally inform" , "Formally tell" , "Declare" , "Make known" .)