#3 Leicester City
Leicester's window of opportunity seems to be slowly but surely closing. While Jamie Vardy will turn 32 next winter, the constant speculation over the future of Riyad Mahrez is what is truly worrying for the club.
The Algerian winger has been outstanding for Leicester and there is no question that he is their main man. Should he leave the club, the former champions will face a tough task in trying to compensate their loss, as it is difficult to find a player who impacts the game the way he does outside of the top six.
However, should the Foxes be able to hang on to their star winger or replace him adequately with the money from the transfer, Leicester could remain a dangerous team that can beat anyone on their day.
Their dangerous counter-attacking style of play can catch any team by surprise and their title-winning season two years ago showed that you can never write them off.