Red Bull team adviser Helmut Marko has admitted that “the concern is great” about Max Verstappen ’s future with the Formula One team due to its current car struggles.

Helmut Marko has put forward Sebastian Vettel as the "ideal candidate" to replace him at Red Bull once he decides to walk away.

The Red Bull motorsport advisor admitted he won't be able to do his job forever, and named the four-time Formula 1 champion as his "ideal" successor