I get that and could even end up being worse than ndombele. But his ceiling as a lazy, skilled baller could be Hazard-esque for a modern day comparison. The thing is, for only 20m, in this day and age, I think its well worth the punt. Not a club record signing like ndombele.
I think so with the right players around him. A proper mid field set up could do it if he's starting, and if chucked on to chase a game, he'll only have to press for 20-25 minutes along with generally having more possession. I think spence's athleticism and speed could also negate his lack.