Sevilla have revealed Chelsea have made two offers in the last week for wing-back Daniel Alves.
"We have refused an offer of 35 million euros (£23.7 million) and another one that was of almost 32 million euros (£21.7 million), which did not include any swap deals," Sevilla president Jose Maria del Nido said.
"The first call was on Tuesday and the second was received on Wednesday.
"If we receive an offer that is above his current value in the market, then he could leave us and if not, we will remain calm."