Better players in their positions at the time and it would have taken something a little more special than they had both shown whilst at Chelsea to get more of a look in. They were at their best in another country and both us and liverpool took a gamble a couple of seasons down the line.And why wouldn't a club develop them when they are already there? De Bruyne had a man of the match performance for them and then got dropped. Similiarily to Palmer he was instantly fantastic as soon as he went to another team. There is no argument for why it wasn't a mistake. As big of a mistake you can make in the transfer market