He worked his nuts off and tired 2nd half,he had to take down the player for the pen as about 4 of the others let the guy waltz through
He needs a rest
I think Walker had him if Fernandinho had just applied some pressure without actually making the attempted tackle. Walker had showed him inside so he could make a tackle with his right leg, and if Fern didn't make the tackle, that's who Ghoulam was going to run into next.
He's been immense for 4 or 5 games on the trot, and if he only gets knackered and makes a few mistakes against a team as intense as Napoli then we're not going to have any problems this year, it's nothing to worry about.