Man Utd fullback Buttner had no idea of derby thrashing
It is a measure of the focus United are giving to Sunday's first clash of this campaign between the two most obvious Premier League title challengers, that no-one has bothered to mention it.
"I don't know about this game," said Buttner, when asked about the shock reverse.
"I was not here and no-one has spoken about it. It won't happen again."