End up with performer on strike (4,3)
I believe the answer is:
turn out
'end up' is the definition.
(an event can end up or turn out a particular way)
'with performer on strike' is the wordplay.
'with' is a charade indicator (letters next to each other).
'performer' becomes 'turn' ('turn' can mean a performer as well as their act).
'on strike' becomes 'out' (I've seen this before).
'turn' next to 'out' is 'TURN-OUT'.
(Other definitions for turn out that I've seen before include "switch off" , "Dismiss" , "A number at meeting" , "Prove" , "Eject" .)