New Chelsea boss Mauricio Pochettino admits his squad is short of players.
Christopher Nkunku and Nicolas Jackson have arrived, as has teens Diogo Moreira and Angelo Gabriel. However, Chelsea have performed a massive clearout - which is still underway.
Pochettino said: I want the right profiles, the right players, to arrive and improve the squad.
Of course, as soon as possible is better than later. Today is better than tomorrow. We need to work really hard on the targets we have. We know it's difficult. We have a very young squad.
It is a challenge. It is something we knew when we accepted being in charge of this club. Nothing to complain about, it is a really exciting moment.
We are confident we can build a really good squad that is ready to compete in the Premier League. We are still working to finish it."