Leicester didn't have much money to build a team last season although they made quite a lot from the sale of Wesley Fofana to Chelsea. But as you know, Leicester didn't have very good players last season so it was difficult for them to have good results throughout the season.
Next season Leicester have to go down in caste and they have to fight there to return to the Premier League as soon as possible. I'm sure this team with a good history in England can return to the Premier League even if they have to experience lower competition next season. Maybe Leicester will strengthen their team with several new players so that they will be promoted to the Premier League again next season.
Leicester will return for sure to EPL if they could hold most of their players during this hard time and especially bring some good new players to consolidate their squad.
Winning 2015-2016 EPL title, keeping a rank among top 10 teams in the table including the 5th place for few years and end up relegating is very hard for Leicester.
Good luck for them next time.