Seems like Liverpool are damned if they do, damned if they don't. Many were up in arms about the prospect of the game being played in January - Now they're committing to the original fixture date, they are being accused of devaluing the competition.
Personally, I think it is the right decision to field 2 squads for 2 different games, not least because they would have been aware of the potential clash before they kicked off in the competition.
It's noteworthy that the January alternatives were considered to be compromising the scheduling of the competition. I agree and therefore, the only workable date was the original one.
No blame on Liverpool here whatsoever.