He told the Telegraph: "I don't know much about football but I will use the club to promote my other business interests.
"We will operate our other businesses from the club, but I will not be taking decisions about football. I will leave that to the current management."
Davidson, who is known as "The Plumber", will have to formalise the agreement in the coming weeks and the agreement will also be subject to a period of due diligence.
The pipe-fitting company owned by Davidson, Fluid Leader, was recently floated on the Plus Market, earning the Englishman a reported £40m.
It is believed Davidson will pay £50m to gain a 96% share in Mallorca, and saw off competition from ex-Newcastle chairman Freddy Shepherd as well as an unnamed Russian investor.