Haha, sorry for assuming you're able to think on your own. When I say "they would never concede any goals in the league, ever again", just how realistic does it sound in your ear?
Even the best back four in history of football would not go clean an entire season. I was speaking metaphorically which I am confident you have no idea what it means, so let me explain. It means a statement which is not really true or realistic but used for expressing the intense of the circumstance.
I hope we can skip the part where I draw you a picture. Bud.
Happy reading.
The irony here is that the grammar and vocabulary in this post is horrendous. "The intense of the circumstances"? The school system in Liverpool has let you down.