They are great at defending, especially these crosses. I wouldn't be too critical of Llorente. I think Morata would be a good choice soon though. Vidal needs to cool it as well. I'd love to be able to bring on Marchisio at some point as well, depending on how he is feeling. Evra has been fine.
We really seem to struggle with a well organised defence. That's always going to be our problem as we've got no flair players out there bar Pogba. Wouldn't mind seeing giovinco playing behind tevez and llorente/morata