Well he's played so little that his stats don't have a chance to normalize.
Using Transfermarkt data to eliminate variables:
Last year - 2912 minutes, 20 goals + assists = 145 mins every goal + assist
This year - 632 minutes , 2 assists = 316 mins every goal + assist.
But if for example he plays next match and has 2 goals + assists, suddenly his rate of contribution is almost the same. If the referee didn't take away his legal goal vs. Roma, the rates would almost be the same.
He has 0 assists according to Lega Serie A. Transfermarkt gives out assists for shots that create rebounds, penalties won, etc. Assists are only given by Lega Serie A for voluntary passes that result in a goal.
I think I'll take their definition and not transfermarkt.
SO, as a minor correction, this year Dougie C has 0 assists in 632 minutes.
And last season he had 6 goals - 13 assists in all comps. 1 of the transfermarkt Serie A assists didn't qualify as the standard for an assist.
Whoscored uses the Lega Serie A numbers.