“The information that’s been made available to the Senate inquiry directly by the department makes it very clear that these arrangements were conducted at complete arm’s length from any ministers,” Morrison said.
Calls mount for royal commission into controversial Murray-Darling water buybacks
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He has also said it was the same as the process used by Labor.
Did Labor use the same process to buy water rights?

No. Under Labor, and during the first years of the Coalition government, water for the environment under the Murray-Darling Basin plan was either compulsorily acquired from farmers or it was purchased through an open tender process.

Murray-Darling water buyback: factcheck of Scott Morrison’s claims | Australia news | The Guardian