Agree with comments - Modric looks numerically amazing, but flipping heck is he dissapointing in actual play. In fact, I'm so dissapointed, I might just sell him, but, then again, I find that CM players do next to nothing on FM12. I've found that since FM 2011, MC's get nowhere near as many goals or assists. It's far too reliant on forwards and wingers for assists and goals. It's not unreasonable to expect 15+ goals from a world class CM is it?
The only way I've managed to make him play any better is as an inside forward on the right hand side. I got the advice from another Luka Modric thread, so you might want to check that one out as I think you'll find this one will be shut down.