Bringing in a back like Lacy could adversely affect his development .
Lacy could help , but second - year back Paul Perkins is primed to step into a leading role after finishing the 2016 season on a high note .
Bringing in a back like Lacy could adversely affect Paul Perkins ' development .
Lacy could help , but second - year back Paul Perkins is primed to step into a leading role after finishing the 2016 season on a high note .