Arsenal have thoroughly outplayed Liverpool today. I'd be pretty worried if I were Brendan Rodgers to be honest. Allen is a neat player but does nothing but move the ball on, useful if you're winning but utterly useless if you are losing, Sahin looked much the same but we'll have to give him time as it was his debut today. Gerrard has had a truly terrible game today, as has Suarez. The bench also has absolutely no quality on it at all, I can't see why he'd even bother making subs.
Sterling looks quite a player, he's been a constant threat down the left. In fact, Liverpool's best moments today have all been from wide positions, Sterling down the left and Johnson down the right. They seem to be crying out for a target man, a Llorente or Andy Carroll type of player. I don't know where they will get one of those from though, they would be very expensive.
I know Rodgers has this Barcelona vision as his main gameplan, the little one touch passing and dominance of possession. It will take him a few years to achieve that at Liverpool as they just don't have players of sufficient talent to do it. Their back four isn't good enough on the ball, evidence in their calamitous showing at West Brom and their midfield, Allan and Sahin apart don't have the quality or the skill to do it well, Arsenal have passed Liverpool to death today.
I think he's made a major mistake in not keeping Carroll and using him to have a more direct plan B then moving to the possession based short passing game he wants when he builds a squad capable of playing it.