Niki Lauda will be back in action "soon".
That is the claim of the F1 legend's son, 37-year-old Mathias Lauda.
"Dad underwent a complex operation and has had bad moments, but he has a strong character and is fighting," Lauda told La Gazzetta dello Sport.
69-year-old Niki Lauda, the Mercedes team chairman, has finally returned home following surgery and rehabilitation for a lung transplant.
Niki's latest setback was a further hospitalisation for influenza.
"He needs to do physiotherapy to recover his energies. He is training furiously and I hope that soon we will see him in shape," Mathias said.
Mathias Lauda drives for Aston Martin in the world endurance championship.
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