Fergie wants to strengthen his team up front, following the departures of Carlos Tevez and Cristiano Ronaldo this summer.
Lyon have admitted that a £25million bid could tempt them into selling the France striker, according to News of the World.
Lacombe said: “Benzema is with us, but nobody knows what will happen. We didn’t think Michael Essien would leave at the time, but when Chelsea arrived with the cheque . . .
“If Manchester United, who as we know have plenty of cash available, want to buy Benzema, then what can you do?”