McTaggart is tweeting that Manny Acta has been contacted by the Astros.
UPDATE: Richard Justice confirms:
Manny Acta tells Mark Berman he has been contacted by the Astros and is excited to be interviewing for the team's managerial opening.
"It is a very special organization to me. I spent 16 years of my baseball career over there. I owe them for shaping me into the baseball man that I'm today."