The Catalans have all but given up on bringing Arsenal's Fabregas back to the Nou Camp and speculation is rife that they have now switched their attention to Liverpool winger Albert Riera.
"It is possible that no-one will come in," said Begiristain. "Who comes in has to convince us, and above all the coaches."
Former Espanyol player Riera is the latest in a long list to be linked to Barca, who have signed just Maxwell and Zlatan Ibrahimovic this summer. But Begiristain has not ruled out the possibility there will be no more new faces before the transfer window closes at the end of the month.
