The Chicago Bears have signed second-round defensive tackle Shemar Turner to his rookie contract, according to NFL Network's Ian Rapoport. No details have been revealed about his contract, but it should be a four-year deal with some form of guaranteed money.

Trapilo is the most critical of the three second-round picks, as he has a very real chance to unseat Braxton Jones to become Chicago's starting left tackle. If he misses any time because of a contract holdout, the odds of him becoming a rookie starter drop significantly.

Training camp will give us plenty of ideas of who will be in the Chicago Bears' starting lineup, but the biggest storyline of training camp comes well off the field.