Eros Ltd corrupted senior citizen (7)
I believe the answer is:
'senior citizen' is the definition.
(I've seen this before)
'eros ltd corrupted' is the wordplay.
'corrupted' indicates anagramming the letters.
'erosltd' anagrammed gives 'OLDSTER'.
(Other definitions for oldster that I've seen before include "Person getting on" , "Aged person" , "Senior citizen (colloquial)" , "Greybeard" , "Mature person" .)