Controversial corner Terrion Arnold leaves Giants without contract — but door is not closed: ‘Can help us’

Terrion Arnold finished his visit to the Giants without signing. But the door is open to Arnold. And sooner than anyone who expected the Giants — and other NFL teams — to wait for a resolution on the free agent cornerback’s felony kidnapping and robbery charges before adding him. “We want to be aggressive in every way, find everything out we can about any situation or player that can help us be better,” head coach John Harbaugh said Wednesday after meeting with Arnold at the facility. “The margins are tight in the NFL when you try to win a game. We’re looking for players that can help us all the time. He’s a player that can help us.” The Giants rebuffed some offseason free agent interest from receiver Stefon Diggs, who was found not guilty of felony strangulation and misdemeanor assault an