England’s disjointed displays in the 1-0 win against Serbia and 1-1 draw with Denmark has seen the team come under intense scrutiny.
Lewis Hamilton insisted he had “no regrets” about his decision to defect to Ferrari next year after claiming his first podium of the season in Spain.
American-born Macdonald joins 15-year-old Sky Brown and 16-year-old Lola Tambling in the Team GB line-up.