Verstappen is tipped to become an F1 world champion in the near future and has shown his credentials in the past four Grands Prix.
Mercedes had dominated the opening eight races of the season with Hamilton and Valtteri Bottas sharing the wins between them.
But Verstappen finally got in on the party in Red Bull’s home race in Austria and he has been in fine form ever since.
A second win followed a few weeks later at the incredible German Grand Prix and he looked on course for a third in Hungary.
The Dutch driver looked in control throughout the race, only for Red Bull to be caught napping by a quick-thinking pit stop from Mercedes which allowed Hamilton to chase down his rival on fresh tyres for the remaining laps.
The five-time world champion eventually made his move with three laps to go to take the chequered flag and increase his lead at the top of the standings even further.
It raised further questions on what the rivalry would be like between Hamilton and Verstappen if they were both battling in the same car.
But Rosberg has delivered bad news to fans hoping to see that materialise net season.
Speaking before the Hungarian Grand Prix on Sunday, Rosberg got some fresh information on Verstappen’s contract.
“I’ve got some insider information and Max has in his contract that if he’s top three in the summer break this year then he can’t leave from Red Bull and he’s going to have to stay one more year,” he said on his YouTube channel.
“So we’re going to have to wait with seeing Max against Lewis in the same team at Mercedes and maybe 2021.”
Vettel needed to win the Hungarian Grand Prix with Verstappen finishing outside the points in order to drop down to fourth in the driver standings.
Instead, he sits third just seven points behind Bottas who’s own future is under heavy scrutiny heading into the summer break.
Mercedes chief Toto Wolff appeared to suggest Bottas’ future beyond this season would be decided in the final two races prior to the summer break.
He crashed out of the German Grand Prix and could only manage eighth in Hungary at the weekend, meaning his position could be seriously under threat.