Michael Schumacher has accused Red Bull of failing to adhere to an agreement about staff numbers in formula one.
Ross Brawn slashed the workforce of the Brackley based team after Honda’s withdrawal, and kept those numbers low despite German carmaker Mercedes taking over in 2010.
Schumacher referred to a clause in the Resource Restriction Agreement (RRA), a pact agreed by the teams to keep costs down.
Earlier reports had accused Red Bull of also breaching some of the RRA’s guidelines about budgetary spending in 2010.
"There was an agreement that everyone would have the same size, but certain teams don’t respect that," the seven time world champion is quoted as saying by the Daily Express.
"Now there seem to be different visions," added Schumacher. "Will Mercedes have to go to an open field again or will the teams respect what they agreed?
"We are not on the same playing field," the German added. "If you take the number of people we have compared with Red Bull, that is very different."