Helmut Marko has revealed a detail in Max Verstappen's contract with Red Bull that could allow him to leave, while comparing him to Michael Schumacher.

Red Bull advisor Helmut Marko has warned Max Verstappen could follow through on his threat to quit Formula 1 amid his ongoing feud with FIA.

The FIA (Federation Internationale de l'Automobile) have been told to 'take Max Verstappen seriously' after he threatened to retire from Formula One. It comes amid an ongoing feud after Verstappen was punished for swearing during a press conference before the Singapore Grand Prix earlier this month.

After a phone call with Max Verstappen, Helmut Marko said the FIA must take his Formula 1 exit hint “seriously” amid the swearing penalty row. With FIA president Mohammed Ben Sulayem calling for a clampdown on fruity language in Formula 1 to differentiate the sport from “rap music”,