Craftsperson taking sides, ousting leader (7)

I believe the answer is:

artisan

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

'craftsperson' is the definition.
(I've seen this in another clue)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for artisan that I've seen before include "Smith" , "Skilled craftsperson" , "Technician" , "Skilled worker by hand" , "Skilled worker at craft or trade" .)

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.

Connecting...