Bari and Udinese have completed several transfer deals.
The deadline for resolving co-ownership deals passed on Friday evening and any clubs who have not yet reached agreements will decide the matter through a blind auction.
The remaining 50 per cent of Barreto's contract has been bought out by Udinese, but he will remain in Bari for another campaign on loan.
These two clubs also renewed an existing co-ownership deal for defender Salvatore Masiello.
New agreements were reached for Bari to take Andrea Coda and Romero on loan for next season.