D.J. Reader has been placed on the physically unable-to-perform list for the Detroit Lions ahead of his first season and training camp with the franchise. Signing with Detroit this offseason in March to a two-year, $27.25 million deal following four seasons with the Houston Texans and four with the Cincinnati Bengals. In Week 15 last season for the Bengals Reader went down with a torn quadriceps tendon that put an end to his season, required surgery, and marked the second torn quad injury of his NFL career. But in April he told Jim Rome that he sees himself getting back to his elite level of p…