@Tim I agree, if his attitude is actually a major problem - although any evidence of that beyond reported Wenger fulminations, silly hats and rumblings about "positional discipline" would be nice.
Song has made no public statement against Arsenal. He's said he's happy and that the reported interest from Barca is flattering but he's not leaving. Wenger has also said he's not leaving, although he now says selling him's an option.