Pellegrini made one change for Chelsea. So I will go with 1 change for Everton, Zab for Sagna. Not that Sagna is playing poorly, like all he has been terrific.
Zabaleta looked knackered at the end of last season and has since played in Copa America. Giving him a gradual introduction into the season might not be a bad idea.
Sagna struggled to establish himself last season and played infrequently. Giving him an extended run of games whilst he is playing well should only be beneficial,
Providing Sagna continues to play well I think he should keep the spot.