Nottingham knock champs arsenal #

I think you might be referring to the Nottingham Forest football club, not the city of Nottingham itself!

Nottingham Forest, also known as the Reds, are a professional football club based in West Bridgford, Nottinghamshire. They were founded in 1865 and have a rich history in English football.

As for the "Knock Champs", I'm assuming you're referring to the 1980 European Cup Final, where Nottingham Forest defeated Hamburg 1-0 in extra time, with a goal from Trevor Francis. This was a historic victory for the club, as it was their first major international trophy.

And, of course, Arsenal is a different football club, based in London, with a long history of success in English football.