Indeed, but he most likely played himself back into Chelsea's starting XI today. De Bruyne's probably the most realistic "big" target for us as a CAM on the market currently.
On the topic of CAMs, I watched Leverskusen's game against Stuttgart yesterday and I was impressed by Son Heung-Min playmaking capabilities(apart from scoring twice). He was playing as a SS in a 4-3-3(which isn't too different to a CAM in a 4-3-2-1) and his passing and vision were superb(the YT highlights for him don't show that side of his game). Apparently Leverkusen spent 10m on him in the summer and he seems to be having a good season so far, so I doubt we'd have any luck getting him at a reasonable price. Having said all that, I haven't seen enough of him to back him fully as a transfer target, so take all the above with a grain of salt. Just felt like dropping his name here, as he seems a great player.