One thing I can say about Cleverly is Hopkins would cut his workrate by about 75%.
Cleverly relies on combo's, but he wouldn't do that against Hopkins. There would be a lot of clinching.
Outside of Hopkins being a bad stylistic matchup for him, I like him. I like his style, form, ect. If he had more punching power he'd be very dangerous.
I wouldn't mind seeing him vs Groves.