Guardian's problem with Openreach (9)

I believe the answer is:

chaperone

'guardian's' is the definition.
(chaperone is a kind of guardian)

'problem with openreach' is the wordplay.
'problem with' is an anagram indicator.
'openreach' with letters rearranged gives 'CHAPERONE'.

(Other definitions for chaperone that I've seen before include "Look after" , "Guardian" , "Young lady's protector" , "my charges are small" , "Companion" .)

I've seen this clue in The Guardian.

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.