My issue with trying to say they have a top 6 squad, is, honestly, who plays for teams around them consistently if you were to compare rosters? How many of those XI make the squad sheet for City, Liverpool, or even some of the others if everyone is healthy?
I would spot you Auba, but beyond him, is there any bang on starter for another competitor for the top 4? Partey should be at some point, but he just got here. Tierney is good, though injuries, and he's behind Chilwell and Robertson at least. I think both central defenders might be able to make it, but Saliba can't get in the side of a team that bad. Maybe 2 or 3 players get into a side with Spurs/Chelsea, and maybe 4-5 with United. Hell, I think there's an argument to be made that their roster is closer to Wolves and Everton when healthy than it is any of their competitors for the top 4.
Healthy, I think Leicester's midfield walks all over that midfield lineup (at least until Partey shows he's ready for the EPL).
Then we aren't even getting to manager. In the top 6-7, other than Ole (lololol) they have the worst manager. Or at best, least experienced. Even Lampard has more experience.