Red Star Belgrade chief Zvezdan Terzic says Marko Grujic will not leave until next summer.
The midfielder has confirmed talks with Inter Milan.
Terzic told Sportske: “He can't leave the club before August, or in any case not before the end of the season.
“If we can't guarantee support from the sponsors of the club, then there's the possibility of signing a pre-contract with a club, but he'll stay with us until the end of August, until the end of the European preliminaries.
“Grujic's family has always behaved well with us, in fact four months ago we renewed until 2018, showing great understanding with the club."