There are a handful of guys in this draft that I feel would be an upgrade to Ervin that the Packers can get.
Amari Rodgers, WR, Clemson (not sure Packers will spend the higher draft capital to get him)
D'Wayne Eskeridge, WR, W. Michigan
Kenneth Gainwell, RB, Memphis
Javian Hawkins, RB, Louisville
Jermar Jefferson, RB, Oregon State