The 31-year-old Argentina striker, who joined the Nerazzurri last summer from the Premiership champions, has scored 10 goals in 25 league appearances to help Inter retain their Serie A title.
"[Inter club president Massimo] Moratti has told me that he will do everything he can," said Crespo.
"I am optimistic because I have seen Inter executives very determined and this makes me very happy."
Crespo has one year left on his deal with the London club, who have retained an option to take the South American back this summer.
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