The Real Madrid winger will be able to negotiate his future away from the club if his contract renewal is not converted into a signed legal agreement before then.
There is time yet. Vinicius and Real Madrid have agreed to address the renewal once the World Cup finishes.
The club has no wish to interfere with his participation in a tournament that has, so far, been outstanding, and that form will inevitably weigh on negotiations once they begin.
Money remains the main sticking point. Vinicius wants a significant rise on his current salary of around €20 million a season.
His last two campaigns at club level have not strengthened his case.
Yet his displays at the World Cup are proof that few forwards match his ability to be decisive when he plays at his best.
Whether that stretches to the roughly €30 million a year he is understood to want appears unlikely.
Sources inside Real Madrid are urging calm. Club president Florentino Perez set out his position during the election campaign that led to his re-election on 7 June.
"Vinicius wants to stay and I want him to stay."
He made the comment to El Pais while still a candidate.
Vinicius addressed the subject himself at a press conference on 12 June.
"Right now I'm focused on the national team. I'll talk about everything to do with Madrid after the World Cup.
"Right now I'm only focused on my country, my team-mates and having a great tournament."
The World Cup will be a significant factor in his future. No third-party club has yet placed a firm offer on the table. Saudi Arabia had explored the possibility of signing him, with vast sums mentioned, though that interest appears to have cooled since — if it was ever more than pressure applied by his own camp.
Vinicius' World Cup form, three goals and two assists in Brazil's opening three matches, could yet catch the eye of Europe's leading clubs.
Little has emerged so far beyond a vague interest from Chelsea some months ago. That route is now considered closed following Xabi Alonso's arrival as Chelsea manager.
The relationship between the Basque coach and the Brazilian broke down during their brief and turbulent spell together at the Bernabeu, a fallout that came to a head when Alonso substituted the winger during a Clasico.
Despite Real Madrid's calm public tone, time favours Vinicius, who will be free to decide his own future in barely six months.
He has always insisted his priority is to remain at the club he joined as a teenager and where he became a global star, a wish Real Madrid share.
An agreement has yet to materialise, though, and the uncertainty around the Brazilian's future looks set to continue until it is resolved, one way or another, after the World Cup.