Negotiations between Fine Gael and Fianna Fáil on the Budget and the Confidence and Supply Agreement should take place at the same time.
That's the view of the Minister for the Environment, Denis Naughten.
Both sides are at odds over the future of the Confidence and Supply Agreement, the deal which sees Fianna Fáil propping up the Fine Gael Government.
The Taoiseach has called for the agreement to be extended now until 2020.
But Micheál Martin appears to want to wait until after October's Budget.
Minister Naughten says there's a risk the issues could overshadow sensitive Brexit talks