Sproles is going to be 32 years of age going into 2015 .
An impressive training camp from the former Duck fifth - round pick could lead to Sproles being gradually phased out and Barner coming into some PPR usefulness .
Sproles is going to be 32 years of age going into 2015 , and an impressive training camp from the former Duck fifth - round pick could lead to Sproles being gradually phased out and Barner coming into some PPR usefulness .