Chelsea boss Jose Mourinho has earmarked two signings for the summer market.
The 51 year-old manager has brought eight players in since returning to Stamford Bridge, but admitted the squad will be much stronger next season once he spends again.
He said: "At the moment we have a 21-player squad which is exactly the number we want to have. And with the natural improvement every big club has of bringing in one or two players, we are signing players for the future so I think we are doing well. We are doing things progressively; we did something in the summer; we did Nemanja Matic now; we react with Juan Mata (sale to United) with (Mohamed) Salah.
"I believe next season we are going to have a strong team from day one. I can imagine next season we are going to be really strong but this season we are in the competitions."
