Really hard to say which one of them is the better, for few reasons. First off all, they haven't the same age, indeed Hazard is one and a half year older than Lucas, which at this young age is a lot. Plus they aren't the same type of players nor have the same attributes. Potential-wise, from the little I heard and saw of Lucas, it seems he could be better than Hazard - without saying the belgian won't be great huh.Though, if the matter is about how they would integrate our team and how they would adapt to the Premier League, then I would say Hazard is a safer bet than Lucas. Indeed, Hazard plays in a league much more similar to EPL than Lucas, plus the last man has never played an "europeen" football. Though, I won't bother to try to find out who is the better of them, since I think both would be a great addition to our team, and I would like us to get the both of them.