I don't think anyone has issues with Cahill being in the squad..Its just that with Terry being at his age, Ivanovic almost guaranteed to start at RB, Cahill will be starting a lot of matches for us in the coming weeks... Cahill is a good covering defender, but he has been exposed on 1-v-1's before, and similar mistakes in the recent matches, against Madrid and Scotland, have done little to provide any sort of assurance in him. Now I hope this doesn't turn into another Mikel debate, but Obi's case is different, or rather more advanced. Mikel is already (or at least was) a guaranteed starter. Its pretty simple, when players like Mikel/Cahill start more matches, their flaws (undeniable of course) become magnified and then you have a new scapegoat.