Jurgen Klopp was left holding a fake contract signed by iShowSpeed after Liverpool's FA Cup exit last month.
In March, Manchester United defeated Liverpool in an FA Cup classic which saw the Red Devils emerge 4-3 winners after extra-time.
When Klopp went into the Old Trafford press room to do his press conference, there was a fake contract on the desk, which it appears was left over from a PR gag.
IShowSpeed signed a 'contract' with the club in a video posted to social media, in which the social media star is told 'Welcome to Old Trafford' and presented with the deal - leaving Speed in disbelief.