Juventus “have until Monday to formalise their proposal” for Mattheus or lose his signature, warned Flamengo.
The 17-year-old midfielder is the son of Seleçao legend Bebeto and Juve had a €2m deal in place for several weeks, but it appeared to collapse  when they failed to complete the necessary paperwork.
“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.”