The stats say that Kvesic makes on average 10.4 tackles a game and misses 0.9 Haskell makes on average 14.67 a game and 1.10 misses a game. Haskell has been making more tackles than Kvesic and misses around the same, and if you like guns Haskell is pretty big as well
Though seriously we should start Kvesic at 7 with Hask on the bench to cover 6/7/8 either way our back row will still be a strong. Fearns could be an outside option, big as an 8 and would possibly help kvesic if you have someone else making big tackles, letting Robshaw/Kvesic and Morgan do the carrying