Having to exchange lire can annoy one (4)

I believe the answer is:

rile

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

'annoy one' is the definition.
'rile' can be an answer for 'annoy' (synonyms). I'm not certain of the 'one' bit.

'having to exchange lire' is the wordplay.
'lire' can be anagrammed to 'RILE'.
However, I'm not clear how this is indicated.

'can' acts as a link.

Can you help me to learn more?

(Other definitions for rile that I've seen before include "Irk" , "Get up nose of" , "Make angry" , "Stir up anger" , "Lire (anag)" .)

I've seen this clue in the Evening Standard.

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.