One who hopes to have a run round part of church (7)

I believe the answer is:

aspirer

I'm a little stuck... Click here to teach me more about this clue!

'one who hopes to have a run round' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'part of church' is the wordplay.
I cannot really see how this works, but
'part' could be 're' (re is a kind of part) and 're' is found within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.