The two-time Super Bowl champion has competed against Tom Brady and New England during his 15 NFL seasons. Now he is in position to help the Patriots, who have faced the Steelers in the AFC championship game three times since 2001. He is Pittsburgh’s career leader in sacks, piling up 80 1/2 during his 14 seasons with the Steelers and 82 1/2 during his career. He briefly retired in September 2014 following a forgettable season in Cincinnati but returned when the Steelers ran into injury trouble. He joins a New England team that needs a victory over the visiting New York Jets on Sunday to clinch home-field advantage throughout the playoffs. “We’ll see. I don’t know,” Patriots coach Bill Belichick said of his expectations for Harrison. “We’ll get out there this week and see how it goes. I’m not really sure how it’s going to go.”