Felipe Massa, who was team-mates with Schumacher at Ferrari in 2006, admitted in May that the German was in a “difficult phase”.
“I know how he is, I have information,” Massa said. “The main thing about all this is that we know his situation is not easy. He is in a difficult phase but we need to respect him and the family.”
Schumacher remains the most successful driver in F1 history having racked up 91 Grand Prix wins en route to his seven World Drivers’ Championship titles.
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His son, Mick, is hoping to follow in his footsteps and last year was snapped up by F1’s most illustrious team Ferrari to be part of their driver academy.
The 21-year-old won the F3 title in 2018 and this year will compete in his second season at F2 level.