Mr Kenny said: "Today the people of Anfield delivered over 10,000 individual objections as well as an official statement outlining the reasons why the city council must not approve Liverpool Football Club's planning application.
"The official letter carries over 100 planning objections. In the light of this, we expect Liverpool City Council to reject LFC's plans as they are in total contradiction with the council's own planning policy.
"If passed, Liverpool City Council would be acting illegally and the individual councillors could well be culpable.
"We would seek to have the councillors who vote through this application removed from office on the grounds that they would be acting ultra vires (beyond their powers)."
Liverpool looked at 17 sites across Merseyside before deciding on Stanley Park.