Scam can, with European Union rejected, resume (8)
I believe the answer is:
continue
'resume' is the definition.
(thesaurus)
'scam can with european union rejected' is the wordplay.
'scam' becomes 'con' (I've seen this before).
'can' becomes 'tin' ('tin' can be a synonym of 'can').
'with' is a charade indicator (letters next to each other).
'european union' becomes 'eu'.
'rejected' is a reversal indicator.
'eu' back-to-front is 'ue'.
'con'+'tin'+'ue'='CONTINUE'
(Other definitions for continue that I've seen before include "Resume" , "Go on without stopping" , "Carry on" , "Last" , "Persist" .)