In terms of his close control, dribbling ability, and shot cutting inside he's very good, and exhibits traits that would excel at a higher level. However, I think he benefits a lot from how Leicester play such a deep block and so direct - there's a lot less of an emphasis of him to showcase talent in the build-up and a lot more to influence the final third - where he's at his very best.
That, and a dearth of right wing options - I mean Lucas Moura is a semi-realistic one for us, for crying out loud - have made him a bit of a fan household name.