Cautious Mike, enthralled by top entertainment, favoured going round clubs (11)
I believe the answer is:
circumspect
'cautious' is the definition.
(I've seen this before)
'mike enthralled by top entertainment favoured going round clubs' is the wordplay.
I cannot quite see how this works, but
'mike' could be 'm' (phonetic alphabet: alpha, bravo, charlie etc.) and 'm' is found within the answer.
'top' could be 'circus' (I have seen 'Big top' mean 'circus' so perhaps 'top' could also mean 'circus') and 'circus' is located in the remaining letters.
'clubs' could be 'c' (abbreviation in card games) and 'c' is found in the answer.
'favoured' could be 'pet' (as in a pet project) and 'pet' is present in the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for circumspect that I've seen is " Prudent, cautious".)