The Minister for Finance has said he has not received any additional figures in relation to the cost of the Dublin Metrolink project.
Yesterday, while discussing the National Broadband Plan, Taoiseach Leo Varadkar indicated that the metro may cost €4-5 billion.
Speaking on RTÉ's News at One, Paschal Donohoe said a lot of work has done on in relation to the redesign of the project.
"I have not had further figures presented to me after that redesign has taken place," he said.
The Dublin Central TD said it would be a considerable cost increase from €3bn to €5bn.
However, he said he has "always acknowledged that building the metro is a huge and very complicated project."
He said this is why the decision should only be made after a tendered cost is received.