young Turk
US /jʌŋ tɜrk/
UK /jʌŋ tɜrk/

1.
a young person who is rebellious and eager to bring about change, often within an organization or political party
:
•
The new CEO faced resistance from the young Turks on the board who wanted to modernize the company.
•
She was considered a young Turk in the political party, always pushing for radical reforms.