Sevilla chief Joaquin Caparros admits they want to keep hold of Andre Silva.
Silva arrived last month on-loan from AC Milan.
However, Caparros says they've already seen enough to sign him outright: "We have a right of a permanent option and we hope to exercise it.
"The sum that we will have to pay, the price of a player depends on his performance."
Silva famously kicked off his Sevilla loan with a debut hat-trick.