PROVINCETOWN — If negotiations are successful, Alex B. Morse, 32, a native son of Holyoke, the working-class city where he has been the mayor for 10 years, will become the next town manager of Provincetown.

On Feb. 25, the select board picked Morse for the position from a final group of three candidates. Barring a breakdown in salary negotiations, he will become the youngest town manager in decades. He’s also the only one of the top candidates with experience in municipal government. He has been mayor since he was 22, when he graduated from Brown University with a degree in urban studies.