Derrick Harmon’s first meeting with Pittsburgh Steelers head coach Mike Tomlin was all over the place. At the NFL Combine, Harmon had a formal interview with the Steelers, but it was not his first interview that day.

Harmon and the Steelers have agreed to a four-year, $18 million rookie contract, according to NFL Network's Tom Pelissero. Harmon spent three seasons as a defensive lineman at Michigan State, then finished out his college career at Oregon before the Steelers selected him with the No. 21 pick.

"The tape is the tape." We break down what Harmon brings to the Steelers and how he'll make an immediate impact.