Lukaku or Costa, I'd be happy either way. I was reluctant a few weeks back when the Lukaku rumors popped back up but the more I think about it the more I'm warming to it.
Lukaku and Bats as the two-headed monster and flanked on either side by Hazard and Willian looks mouthwatering. And with Lukaku we wouldn't have to constantly worry about him losing his head or worry about niggling injuries. Costa, as great as he can be, is a ticking time bomb in both of those aspects.
With Atleti now signing another striker I think any move for Costa is now off the table, though. Which means Lukaku is a no-go for us.