We are buying him because it makes good sense to have a succession plan in place for the long term stabilty of the side. I just think in the short term it may prove to unbalance the team.
I have mentioned before that De Bruyne reminds me a bit of Gerrard when he played behind Torres, he also played out wide on the right but you wouldn't really put him there out of choice.
If it were up to me I would still buy De Bruyne but he would rotate with Silva and Sterling. he would be more effective cutting in from the left as Sterling does now. I would then sell Nasri and buy Robben