I think Guus may want one more opportunity to bring success to a club given his relative failures with The Netherlands. He's proven in the PL, even if only for a short while. I believe he'd do very well at Leicester as long as he's up for the challenge.
However I've read a bit about Bob Bradley and personally wouldn't mind him coming in. It seems like he possesses a lot of the good qualities that Nigel has, for example his ability to nurture and be like a father to players. For me, those two would be a dream team.
Steve Cotterill being anyway near lcfc is ludicrous. He's never successfully managed in the Premier League and to be honest I don't think the players would show him the same level of respect as they would a more established manager of NP. They liked NP and it would certainly be harder for Cotterill to gain respect.
Lennon, I can understand because he's managed at Celtic and in Europe with them as well as now steadying the ship at a troubled club in Bolton. I'd love for Lennon to do well but not sure he's ready. Either way he'd definitely give it 110%.
It's a shame about Cambiasso not wanting to manage. Though perhaps a player-coach role might be of interest. Cambiasso as player coach and Guus as head coach.