Elneny barely started last season, and when he did Arsenal won some big matches.
Also Holding formed a good partnership with Mari towards the closing months of last season.
He featured pretty heavily though, from Transfermarkt he made 23 appearances in the league alone and played 1,542 minutes.
For reference 90 minutes x 38 games is 3420 minutes (doesn't included added time but it's close enough).
So he played approaching half of the minutes available in the league which is quite a bit.