Mika Salo does not feel Verstappen should be in F1 at such a young age.
Former Caterham driver is looking to be behind the wheel of the Sauber in 2015.
Alexander Rossi will not make his race debut for the team at Spa.
An all electric F1 car from Red Bull was spotted with the team during pit stop practice at Spa.
"Sure the (social media) model does not work yet as you cannot monetise it, but it is just a matter of time" - Toto Wolff.
Speculation he might abandon retirement with a new prominent role at Maranello surfaced in May.
One of the Grand Prix hosts who are willing to pay more is Mugello.
Susie Wolff will be the first female driver in more than two decades to take part in an official Grand Prix weekend.