By Brian T. Smith and Jose de Jesus Ortiz The Astros are expected to name Reid Ryan as president to replace George Postolos, who unexpectedly resigned Monday, a person with ties to both MLB and the Ryans said today. The offical announcement is expected Friday. Postolos left the Astros to return to a role as an adviser in major league franchise acquisitions. He was a key figure in owner Jim Crane’s 2011 purchase of the Astros. The process of naming Postolos’ replacement has been handled by the business side of Astros operations and Crane has been directly involved in the search. Ryan, 41, is the CEO of the Round Rock [...]