I'm going to be happy with either of the three. Barkley, Chubb, Nelson
With Barkley we get a dynamic back who will help the offense.
With Chubb we add a really good piece to our strength on D, the line. Which then makes our backfield that much better.
with Nelson he helps make our front a force in the run game and pass blocking. He makes our backs better and keeps Luck off the ground.