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Michigan recruiting prospect David Long is a four-star defensive back from California who got five-star treatment -- as in five coaches -- from Michigan on Monday night.

Harbaugh and four assistant coaches -- Chris Partridge (linebackers / special teams), Jay Harbaugh (tight ends), Don Brown (defensive coordinator) and Greg Mattison (defensive line) -- all paid a visit to Long in his Los Angeles home.

Long has narrowed his choices to Michigan and Washington and will announce Thursday at 6 p.m. on ESPNU. He shared late Monday on Twitter a video of the U-M coaches responding to his question, "How's business?"

Harbaugh, according to multiple recruiting sites, is expected to visit four-star defensive end Connor Murphy on Tuesday. He reportedly is planning to spend the night at Murphy's home.

Murphy (6-7, 250), from Brophy College Prep in Phoenix, is rated a four-star prospect by Scout.com.