Long to be back on stage in the London area (7)
I believe the answer is:
stepney
'the london area' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'long to be back on stage' is the wordplay.
'long' becomes 'yen' (synonyms).
'to be back' says the letters should be written in reverse.
'on' means one lot of letters go next to another.
'stage' becomes 'step' (I've seen this before).
'yen' backwards is 'ney'.
'ney' after 'step' is 'STEPNEY'.
'in' is the link.
Can you help me to learn more?
(Other definitions for stepney that I've seen before include "East London area" , "East London district" , "part of East London" , "part of the capital" .)