It may be a low-key signing if it goes true, but low key in the sense that it hasn't been talked about much in the media. Hazard has led the whole world on one massive WUM, with all the twitter shite. Kagawa is a key player for the two time Bundesliga champions, Hazard is a key player for Lille, who came third in Ligue 1. Low key in media coverage? Yes. Low key in terms of how good a player he is? Not at all.
Not saying Kagawa is the better player, I'd actually say Hazard is, but for some reason I'd be more pissed off if we lose out on Kagawa. Maybe he just suits us more or something.