Don't know why people keep beating this drum. I get it in the sense he's a good player and "free." But where does he actually play? He's not going to add much energy to the midfield, he's somebody you need to do the running for, and we don't protect the defence as it is. So that's putting the cart before the horse.
He's probably not going to get a central attacking midfield role carved out for him either. We've already got that, albeit he needs to play better.
I don't really see it with this one, I think it's one of those where people get a little carried away at the "value." I think he's been great for Brentford and can play for a better team, quite clearly, but that's not necessarily meaning he's right for us. You still have to give him a good contract for a number of years which isn't to be taken lightly.