I'm not too worried about the price to be honest. I'm sure the finances of the club are in order!
The bit I was worried about was what some other posters have said with regards to Korean players settling into the EPL. However, he's been in Germany since the age of 16 so I think is acclimatised to European style football. He will need some time, but appears to be a better option than we have currently.
Having said all of that, I had high hopes for Dumitrescu, Acimovic, Toda, Blondel, Zamora, Dalmat, Andy Reid, Boateng, Rebrov, Paulinho, Soldado and Lamela!