City’s wretched start to the season at Carrow Road continued with a fourth consecutive defeat in league and cup since the head coach replaced Johannes Hoff Thorup in the summer.
Jack Stacey put the Canaries ahead, but the hosts shipped three in the space of 15 second half minutes before Jovon Makama pulled one back in stoppage time.
Manning admitted afterwards he felt ‘angry, frustrated’ and let down by his under-performing players.
The City chief spoke to the Pinkun on Saturday afternoon at Carrow Road.