I don't follow Bundesliga closely. Do you know why Schalke are 13th currently, having finished 2nd last season ? I see that they had a shocking start to the season, losing their first 5 league matches.
They also have one of the older squads in the league. Their goals scored record this season is very poor. Even last season, while finishing 2nd, their goals scored was only 6th best.
Since 11/12 Schalke have finished 3rd, 4th, 3rd, 6th, 5th, 10th. Then Tedesco took over. 2nd last season, currently 13th.
On Expected Goals, last season they were the 4th best side and are currently the 8th best. So perhaps slightly lucky last season and a bit unlucky this season so far.
Transfermarkt rate Schalke's squad as the 5th most valuable.
The £38m net spend in Tedesco's first season looks high relative to other seasons. Before he joined, the club tended to make a profit in the transfer market.