The "not finished yet" thing is surely nonsense. Roof and drainage should be well finished and fully operational at this point (and long since). However, I hope it is just a bizarre scheduling error and not a miscalculation of drainage capacity. I'm also bit surprised that any failure/overflow route (for an upturned or barrel-roof design) is within the bowl footprint, and not fully external, to avoid this. Either of which could require some expensive mitigation. Hopefully it's as trivial as they're suggesting.
Who's lying in that newspaper article,then? EFC, The Daily Mirror or Laing O'Rourke?