Our defence isn't right. We play with a six man defence, basically. The Goalkeeper, the 2 CBs and then the Dm when we're attacking and the two Fbs when we're not.
And out of those six, our goalkeeper isn't playing well (though I thought he was better yesterday), only one of our CB's is playing well (despite us trying two different players as his partner), our DM has been injured since the end of august and his replacements aren't of the same quality, and our full backs are getting caught out a lot, particuarly on the right where Coleman's relatively inexperienced but Baines is also.
Replacing coleman might help but it's naive to think it would solve all our problems. We get a good CB partnership and a good DM in there and we can get away with attacking full backs. Right now we're looking good going forward but we're damned vulnerable because the four defensive players we leave back when we bring the two full backs forward can't cope. We can either live with that tradeoff, only bring one full back forward (the hibbert option) or try and sort out our defence so we can cope with two attacking full backs.