On Saturday afternoon the news broke that Lions free agent defensive tackle Ndamukong Suh had reached an agreement in principle with the Miami Dolphins on a record-breaking 6-year, $114 million contract that will guarantee Suh $60 million. While Suh can't officially sign the contract until 4:00pm EST today, it's probably a safe bet another team (like the Lions) won't be able to swoop in and change Suh's mind.
So let's assume Suh is officially no longer a Detroit Lion. It's a huge blow to the Lions defense, which was the 2nd-best defense in the entire NFL in 2014. The Lions basically built their defense around Suh considering his dominance at the DT position, so it leaves a large hole to fill through free agency and the draft.
That said, losing Suh gives the Lions somewhere close to $17 million in cap space they can spend on free agents to fill some holes they have at multiple positions like offensive line, cornerback and, of course, defensive tackle.
So in this post not only will we take a look at which free agents the Lions might go after, we'll be taking a look at why the Lions might consider switching from a 4-3 defense to a 3-4 defense now that Suh leaving. In fact, after the jump that's the first part we're going to tackle.