Chelsea have lost a few players this summer and only four senior additions have been made.
Cesar Azpilicueta has spoken about Chelsea's summer transfer business.
The Spain international said the quality of players who have left Stamford Bridge can't be compared to those who have joined the champions.
Azpilicueta said as skysports.com reported: “When you see the players we have lost and the players we have signed, they are not the same.
"Obviously, we have very good young players, but we have to know the reality that being champions is even harder the next season – we have experience of that."