Former Roma chief Walter Sabatini hopes they can keep hold of Radja Nainggolan.
Sabatini signed the Belgium international for Roma and is aware that Chelsea are making a new attempt for the midfielder.
He said: "I hope Roma do not want to sell.
"He is an '88 and 29 years of age, it would be a foolish investment (to sell).
"The fact is that he's among best players in Europe."