Mason and bentaleb simply isn't a decent midfield pairing. One of them if you must, but never both. Not defensive enough, not attacking enouh.
And again, I know I've been saying it ever since his inclusion, but I just watch mason and I'm almost baffled, o try and figure out what people see in him and just see a very poor player working very hard...
Dembele comes on and drives with the ball, positive, powerful. Stambouli offers some defensive assurance (and also some surprising attacking threat) mason just... Passes... Runs around. I dint know. I'm certain where he'll be in a couple of years. Either way, stambouli or dembele to start please