This may attract considerable interest (7)
I believe the answer is:
capital
This could be a double definition.
'this may attract' is the first definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'considerable interest' is the second definition.
The answer and definition can be both related to property as well as being singular nouns.
Perhaps there's an association between them I don't understand?
Can you help me to learn more?
(Other definitions for capital that I've seen before include "Money saved or invested - seat of government" , "Excellent - assets - first city" , "It's excellent in the big city" , "Cardinal; splendid; assets" , "Finances" .)