That's misunderstanding the motivation behind wanting Nuno out, if there were any evidence from his previous work that suggested things could improve with time then I doubt we would have reached peak negativity so quickly, but there isn't.And what happens when performances arent great with Potter within 2 months. Sack and change , sack and change until something sticks is very inefficient.
If Potter were here and after 2 months performances were poor, you could still look back and see that he has a track record of making limited teams play good football, and justify giving him more time.

