McNamara was not bought as a replacement for Anderson. I think McNamara has been brought in for two reasons:
1. To play left back, which he does very well. (Not that Foster didn't do well in that position but, he's better suited elsewhere).
2. To provide some experience in the defence if/when Anderson goes (Diamond and Considine are still young, inexperienced and liable to make the odd howler).
I think he'll be a good addition to the squad. I'm hoping Touzani gets a run next season - He can also play in defence if required and appears to be more of a 'natural footballer' than diamond & Considine.
If we don't lose Anderson and provided no one else goes (apart from Langfield, as the man's a donkey), I feel we have good strength in depth for the first time in many many years. That's what it's all about these days! Especially with our big European run coming up!!!?!!