Bill O’Brien is mulling his options. (Gene J. Puskar/AP)

Bill O’Brien stepped into an incredibly difficult situation when he succeeded Joe Paterno at Penn State in the wake of the Jerry Sandusky scandal and now he may be ready to return to move on.

O’Brien, who previously was the New England Patriots’ offensive coordinator, has been approached by the Houston Texans and the Minnesota Vikings, according to CBS’s Jason La Canfora. The Texans have a vacancy after firing Gary Kubiak; the Vikings do not, although Leslie Frazier is in the last year of his contract. And, according to La Canfora, O’Brien might be in the mix if the Washington Redskins had an opening. O’Brien was an effective NFL coach, with that nasty 2011 sideline dustup with Tom Brady a distant memory.

O’Brien is 15-9 over two seasons at Penn State, but reportedly was unhappy when another round of unexpected Sandusky-related sanctions was imposed on the program. Three of his staffers have left recently and O’Brien’s performance at Penn State probably would outweigh the difficulties Bill Belichick’s assistants have had when becoming head NFL coaches.