Chelsea are still some way from being the finished article - with several areas of the park up for improvement next season.
The club need a new striker, which looks like happening in the form of Diego Costa. They also need a new central midfielder - the signature of former Arsenal star Cesc Fabregas earlier today ended that necessity.
But left-back remains an area which needs improvement - and many reports would have you believe they have already decided on the man they want to fill that role.
Atletico Madrid have had an excellent season but with that success comes the peril of attention. Teams from around Europe with bigger budgets are now circling around the La Liga champions - hoping to snap up whoever is available.
One player Chelsea have their eye on is Filipe Luis. The Brazilian defender is reportedly Jose Mourinho's number one target to fill the role of the departed Ashley Cole. Luis has a clause in his contract reportedly making him available for around £37 million - although Chelsea will certainly not be willing to pay that much for the former Deportivo star.
But it certainly seems as though Los Colchoneros are preparing for life without the starter. They confirmed the signing of Guilherme Siqueira of Granada yesterday. The former Liverpool and Everton target spent last season on loan at SL Benfica - helping the side win the Portuguese League and Cup double in an impressive campaign.
Funnily enough, he and Luis were in fact team-mates before. The pair were both at Brazilian outfit Figueirense in 2003 and have remained friends since - as they both looked to make a career in Europe.
And Siqueira, the man bought to potentially replace Chelsea target Luis, has spoken about his friend's future:
"For many years we have remained friends. But when it comes to such an important club, you have to be professional. Thing I talked to him is that I came to play. I am Siqueira, he's Filipe . Filipe in this club has a very important role. I do not want to talk about who goes and who stays, Siqueira is all I want to talk about."