Ferrari has emerged as an unlikely option for McLaren, as rumours of a looming divorce with struggling works partner Honda persist.
In recent days, speculation the McLaren-Honda split will proceed has waned.
But Italy’s authoritative La Gazzetta dello Sport now claims Ferrari - once McLaren’s arch title nemesis - has received an "exploratory enquiry" from the British team about the possibility of an engine deal.
"It is a dramatic and unpredictable scenario that years ago would have been unimaginable," the sports newspaper said.