Possible Clues:

• German city
• The largest city in Germany’s Ruhr conurbation
• Largest city in Westphalia, with a top flight football team
• City walked about with hillock -- nothing standing out
• Leader of men stepped up with German champions
• Stepped around mud outside new Ruhr location
• Stepped back: mud outside new Ruhr location
• Stepped over mud outside new Ruhr location
• Walked over to small hill missing nothing in European city
• Stepped over wet soft earth, going round north German city