Somebody who has no problem in playing a few more offensive players. Something like Benitez is doing for Napoli. Since we got Ranieri we've always had coaches who shit their pants of the thought of not playing with a bunch of defensive midfielders and defensive wingers.
I would love Klopp here. He plays awesome football and rather have players like Reus on a flank than Lichtsteiner and Asamoah.
Also we should defintely look to Rudi Garcia if his success in Italy continues. Clearly 2 or 3 years from now his Serie A experience mixed with offensive football would be good.