You're really not seeing the bigger picture. De Bruyne also enjoyed a top season at Bremen, was motm in at least one of the three games Mourinho gave him a chance (not in his natural position I might add) and has, by all accounts, been a more vital player than Hazard for Belgium since 2012.
He is a top signing.
And your comment would imply you don't think much to our other signings. Want me to go through why Sterling was a top signing as well?
More importantly than anything else, the signings we have made not only directly improve the quality of personnel in our starting lineup, they are also carefully hand picked to fit our system and get the best out of our pre existing squad. I've mentioned it previously but Sterlings impact on Silva and Kolarov's game is an immediate example of the impact of the signings. World class transfers I'd say. Even if the players aren't at that level as individuals, they are changing the whole complexion and mentality of our entire team. And I'd rather have that than spend a massive wad of cash on a player like Chinless Ronaldo; a world class player who wilfully makes himself more important than the rest of the team.