Croatian media sources insist the club in question is Tottenham.
"We agreed with their future club, that one of them remains at least another year with us," Barisic told Sportske Novosti.
"For now we cannot confirm to which club they are going but it is true that they are both leaving.
"It is just too early to talk about the club which bought them. We will confirm that when everything will be sorted out.
"The transfer fee? 20 million Euros is - let us put it this way - the right number."