By Daniel Moxon Helmut Marko says Max Verstappen is “relaxed” despite the ongoing drama within the Red Bull team – but warned “a door will open for him everywhere” if the Dutchman decides he has had enough. Infighting became public last month when the Red Bull parent company announced an investigation into team principal Christian Horner. He was accused by a female colleague of inappropriate behaviour, but the grievance against him was later dismissed. But that was not the end of it. From Verstappen’s father Jos publicly calling for Horner’s exit to Marko claiming he too was under investigatio…