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. Reigning F1 world champion Verstappen,

Concern is growing within Red Bull that Max Verstappen will leave the team at the end of the year, according to motorsport adviser Helmut Marko.

Wolff has shown no doubts over his opinion with 18-year-old Kimi Antonelli's phenomenal start to his F1 career and should the surprise switch to Mercedes come for Verstappen, the Silver Arrows boss would face a tricky decision over who to replace.