If anything,yesterday's performance(which was the first full 90 mins Leo played this season) showed that he can still be great and maintain 70-80-90% of his last year's form,which basically sets him far and above every other player in the world.
With Arthur+FDJ bossing the midfield(or at the worst case scenario holding their own against talented and hard-working teams),we can hope that Leo will take a more a advanced position and won't have to the main goalscorer AND the main creator at the same time.
Fingers crossed that he'll stay away from injuries as much as it is humanly possible at this age.
If everything goes well,I think that he can easily get 35-40 goals and 15-20 assists.