It could be argued that Diamond is just as injury prone.
AFC should definitely be making inquiries IMHO. Anderson can't be that difficult to deal with if he wanted to come back.
I see afc.co.uk fail to point out which game(s?) the half price sale is for:
http://www.afc.premiumtv.co.uk/articles/january-sale-at-pittodrie-20100114_2212158_1930798
I'm not saying either of them insulted the fans, just curious that you haven't provided any proof.
Personally I'm more interested in what happens on the park.