Councillor Arrowsmith poured scorn on the rumours that the Arena is four weeks behind schedule.
Speaking to the CET he said: "Every time I go there, the difference is absolutely amazing. The concrete terracing is almost complete, only one small area is left to be done. The seats have arrived. They're actually starting to put seats in the grandstand now.
"The current progress is terrific. I did hear previously that Laing O'Rourke thought they were four weeks behind schedule and I asked that question of one of the supervisors this afternoon. He said it was not true."