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Last year, the Detroit Lions passed on defensive tackle Aaron Donald with the 10th pick in the draft, opting instead for tight end Eric Ebron. This year, the Lions surely wish they had Aaron Donald instead of Ebron.

Apart from the gulf between their performances as rookies, Donald fills a need that could become far more pronounced for the Lions. Soon.

Take a look at the NFC North potential free agents, as compiled over the weekend by PFT. Due to hit the market on March 10 are Ndamukong Suh, Nick Fairley, Andre Fluellen, and C.J. Mosley.

The only defensive tackle under contract for Detroit is Princeton rookie (in 2014) Caraun Reid.

The situation gives each of the defensive tackles extra leverage, since the basic principles of economics will make the Lions more desperate than other teams to try to retain a semblance of continuity in the interior of their defensive line.

For all NFC free agent, click here. For all AFC free agents, click here. Not here.