Here's one that hasn't been mentioned, but is a damn sight more credible than some of the names listed:
Eddie Howe at Bournemouth. Maybe one for the future, but worth keeping an eye on. Definitely an emerging young coach.
Very ambitious young manager, built a great team at Bournemouth, got them promoted from League 2 to League 1. Then left to go to Burnley. Did okay there, but returned to Bournemouth for family reasons (his father was ill and has since passed away). Bournemouth were struggling in the drop zone in League 1 when he rejoined them in October; he totally turned them around again and got them promoted to the Championship for the first time in 23 years.
Might be a few years early for him, perhaps he needs another few years in the Championship, maybe reaching the play offs, but other than that, he is where Moyes was when he left PNE for Everton in 2002.
He's only aged 35 - two promotions under his belt already, used to moving clubs, and at such a young age too.