Less worried about Leicester. Despite their recent achievements, they aren't significantly different to us as a club.
Everton could be an interesting one though, certainly. You'd have to think he'd seriously consider an opportunity to go there should it arise.
Don't know CH personally but from what I have seen he strikes me was somone who is loyal hardworking and honest and expects that from those around him and having been previously poorly treated by one of the so called big clubs finds everything about Brighton to his liking as such I think he's going nowhere other than up the table with the Albion