There is nothing eye popping here. PFF isn't infallible on grades but it says everyone is average at best.
Paul Richardson 28 yo Targets-92nd Receptions- 86th Yards- 104th TDs- 74th. PFF grade 59.6
Taylor Gabriel 30 yo Targets- 80th Receptions- 84th Yards- 86th TDs- 48th. PFF grade 59.6
Josh Gordon 29 yo Targets- 89th Receptions- 91st Yards- 74th TDs- 96th. PFF grade 63.7
Demaryius Thomas 33 yo Targets- 71st Receptions- 69th Yards- 72nd TDs- 96th. PFF grade 65.9
Chester Rodgers 26 yo Targets- 115th Receptions- 116th Yards- 126th TDs- 74th. PFF grade 50.5
Tavon Austin 30 yo Targets- 119th Receptions- 121st Yards- 127th TDs- 96th. PFF grade 61.3
Chester Rodgers is the youngest and may have the most growth potential but he has the worst grade.
I have to wonder what they will bring to the table that Allen Lazard 72.3, Devin Funchess 68.9, Marquez Valdes-Scantling 57.0, Equanimeous St. Brown N/A, Jake Kumerow 63.4, Reggie Begelton N/A and Darrius Shepherd N/A don't already offer. I don't think GB is looking for more of the same. Who knows maybe they are.