General manager Ryan Pace showed he will not hesitate to move on from free-agent mistakes, releasing safety Antrel Rolle after paying him $4.9 million last season. It's one thing to cut a 33-year-old veteran with no guaranteed money left in his contract and it's another to replace a third-round pick after one season. The Bears aren't doing that with Grasu, but they have options and have pledged the best five linemen will play. While Larsen, Ramirez and Whitehair have the versatility to play all three inside positions, Grasu is strictly a center. Players often make big strides entering their second year and Grasu will have the chance to show he's better and can play with more strength after being overpowered too often in 2015.