Juventus have been warned they must finalise a deal today for Flamengo attacker Mattheus.

The 17-year-old midfielder is the son of Seleçao legend Bebeto and Juve had a €2m deal in place, but it is still to be rubberstamped.

"Juventus have until Monday to formalise their proposal," warned Flamengo President Wallim Vasconcellos.

"We hope that the paperwork can arrive so we can finally complete the sale. If it does not, then next week we will meet with Mattheus to propose a new contract."