The Lions made a considerable addition to their defensive interior during free agency with the signing of D.J. Reader. The veteran defensive tackle is continuing to recover from his second career quad tear, though, and it could very well lead to missed time once training camp opens. 
Reader is expected to be sidelined when camp begins later this month, as noted by Dave Birkett of the Detroit Free Press (subscription required). He adds, however, that the 30-year-old remains on track to recover in full by the start of the regular season. Having Reader available for Week 1 would be a key development for the Lions’ front seven.
The quad tear ended Reader’s fourth Bengals campaign, and it threatened his free agent stock ahead of this spring. The former fifth-rounder inked a two-year deal with Detroit worth up to $27.25MM. The pact only includes $7.4MM locked in at signing, though, and with a $4MM roster bonus due early in the 2025 league year Reader’s health and performance come the fall will be key deciding factors in his future.
During his time in Cincinnati, the Clemson product served as a full-time starter and exceled as a run defender. Reader also posted 20 quarterback hits and seven pass knockdowns, and he faces high expectations in Detroit. The Lions underwhelmed in a number of defensive categories last season, although they were second in the league against the run. The team’s defensive front will likely remain strong in that regard with Reader in the fold.
If he is not fully healthy once training camp opens, Reader will be a candidate for the active/PUP list. Player can be activated from that list at any time, and the progress he makes with respect to rehab will be worth watching closely during the summer.
Great player but it was a good time for the Bengals to get away IMO. Injuries are piling up on DJ.
He’s probably has one good Super Bowl run with the Lions!