Think he'd do well to take a middle step like the Bundesliga.
Seems like he could do the Xhaka thing but without the hot-head mistakes. Very good at passing the ball forwards, although also not the most mobile like Xhaka.
They suggest him here as a Matic replacement for Utd. If Partey is to be deployed more as a b-2-b on the right side then it could make sense to have Koopmeiners deeper dictating play on the left.
https://breakingthelines.com/player-analysis/player-analysis-teun-koopmeiners/