Ivan Rabb to announce college choice Monday night

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Ivan Rabb, one of the best players in the 2015 recruiting class, will announce his college choice at 7 p.m. Monday, according to his high school coach, Lou Richie.

The five-star Bishop O’Dowd-Oakland recruit is expected to choose between Cal and Arizona, though Kentucky, Kansas and UCLA have been involved in the process as well. Richie said Rabb has not indicated what his choice will be.

Rabb is a 6-foot-10, 220-pound forward who would mean a great deal to the Cal basketball program if he did commit. Head coach Cuonzo Martin made Rabb his top recruiting priority the week he got the job.

It would be Martin’s biggest win since arriving in Berkeley. Or it could be another disappointment in the wake of five-star center Caleb Swanigan picking Michigan State over the Golden Bears. Swanigan is a fellow McDonald’s All-American and a friend of Rabb’s. The two had talked about coming to Berkeley together as a package deal.

Rabb was The Chronicle’s All-Metro Co-Player of the Year, along with O’Dowd teammate Paris Austin. Rabb won the state championship for O’Dowd with a free throw in the final second of overtime. He was planning on announcing his college decision after the state championship game at Haas Pavilion but opted not to after the dramatic ending.

He has since played in the McDonald’s All-American game in Chicago and the Nike Hoops Summit in Portland, Ore. Cal has already received commitments in the 2015 class from guards Tyson Jolly and Davon Dillard.

Mike Vernon is a San Francisco Chronicle staff writer. E-mail: mvernon@sfchronicle.com Twitter: @M_Vernon