The plot is currently used as a children's play area and recreational space.
They want the field protected, but town hall bosses say the site must be overhauled for 'financial reasons'.
She asked then if the council would 'commit' to consulting with the public before any plans are finalised and whether funds would be available to mitigate the loss of open space.
Coun Wright said: "A full public consultation will take place before any decision is made.
"We've heard nothing from the council – it still hasn't outlined what the consultation will entail, or when it will start – which is really frustrating," she said.
Fellow protester Mike O'Neill pointed out that council leader Andrew Western said he would be in touch as soon as there is an update.
"We don't want any development on this plot," he said.