The University of Maryland Board of Regents unanimously approved a move to the Big Ten on Monday, a source tells ESPN colleague Brett McMurphy.

An official announcement is expected at 4 p.m. ET at the school's campus in College Park, Md.

Maryland must officially apply for Big Ten membership, and needs a yes vote by at least nine of the 12 Big Ten presidents/chancellors (80 percent required) for admission. This is basically a formality.

After two decades of relative quiet, the Big Ten is poised to expand for the second time in two and a half years. Rutgers is expected to follow Maryland, giving the league 14 members.

Much, much more to come ...