Assistant upsets entitled man in European city (5)

I believe the answer is:

paris

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

'european city' is the definition.
(capital of France)

'assistant upsets entitled man' is the wordplay.
'assistant' becomes 'PA' (personal assistant).
'upsets' shows that the letters should be reversed in order.
'entitled man' becomes 'sir' (sir is a kind of man. I am not sure about the 'entitled' bit.).
'sir' in reverse letter order is 'ris'.
'pa'+'ris'='PARIS'

'in' acts as a link.

Can you help me to learn more?

(Other definitions for paris that I've seen before include "Legendary prince" , "captivated Helen" , "'''I love ... in the springtime'' (Cole Porter) (5)'" , "French department" , "'I Love - - ', song by 14" .)

I've seen this clue in The Irish 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.