Sean gets utterly fleeced (5)
I believe the answer is:
shorn
'fleeced' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for shorn that I've seen before include "De-fleeced" , "set upon by strippers?" , "Clipped, fleeced" , "(Of sheep) with wool cut" , "Shaved" .)