Yep.
It shouldn't be in use in the FA Cup at all either. If this had been a third round tie at Coventry we'd be celebrating United being dumped out of the cup.
If it can't be used in all ties then it shouldn't be used in any.
Anyone else super excited for yet another boring Manchester Derby and yet another win for Oil Money FC?
Can't wait. Game of the year. Isn't football great?