As previously mentioned, Iowa coach Kirk Ferentz didn’t say whether he would respond to possible overtures from NFL teams that currently are considering the possibility of hiring Pats V.P. of player personnel Scott Pioli.But while Ferentz might stay, his star running back is leaving.Shonn Greene, who rushed for more than 100 yards in every game this season, said in a post-game interview that he’ll enter the NFL draft.Specifically, Greene said that he has “nothing left to prove” at Iowa.Greene rushed for 121 yards and three touchdowns in Thursday’s 31-10 win over South Carolina.