Crush a United fan into unfamiliar Shed end (11)
Crush - def (but referencing football terraces in surface)
a united fan into - fodder
shed - deletion indication
end - delete the letters "e", "n" and "d" from fodder
The Shed end is the home of Chelsea fans - sworn enemies of United (Manchester, Leeds, West Ham etc. etc.)
My explanation of this clue includes a dig at the petty ultra-Xim insistence on giving anagram indication to deletion fodder not in sequence.