Although Chelsea remain in contention for both the Premier League and Champions League, it is more through will and determination than it is through quality.

While the club could conceivably still end the season with both of these prizes, this shouldn’t disguise the need for serious reinvestment.

There are obvious flaws in the Chelsea squad that will need to be addressed in the summer if the club are to challenge more convincingly next season. And it’s well known that manager Jose Mourinho thinks the club need to spend in at least one area.

With this in mind, we consider FIVE transfer necessities for Chelsea this summer.

 Click on Costa to see where Chelsea need to spend most

Diego Costa