Real Madrid's unsettled winger? (3,7)
I believe the answer is:
red admiral
'winger?' is the definition.
(I've seen this before)
'real madrid's unsettled' is the wordplay.
'unsettled' is an anagram indicator.
'real'+'madrid'='realmadrid'
'realmadrid' with letters rearranged gives 'RED ADMIRAL'.
(Other definitions for red admiral that I've seen before include "Russian sailor" , "Tiny flier" , "Winger" , "Common butterfly" , "Vanessa" .)