Yeah Real dont need him unless modric or Kroos leaves.
A very hard working player. I guess Benitez wants him to improve the defensive balance of the team. I think Modric and Kroos are far better than him, but don't offer the work rate of the Chilean (when on form). He's technically a bit clumsy for a side like Real Madrid. I'm not a fan, so I welcome this signing if it happens.
I would take Vidal over Kroos any day of the week. Much more complete. And Kroos is still living off his world cup performances, as truth be told, he was really poor for Real Madrid last season I thought. Modric carried him a bit.
Maybe Benitez is planning 4-3-3 with all 3 of them in midfield in Modric, Kroos and Vidal and 3 attackers, if not maybe Modric and Vidal with James just ahead of them.