Might be hard to get minutes, but maybe the competition elevates his game and someone gets hurt. Could put him in the mix. Might be better to shoot for the moon at this point. If he was 20+ and needed to start playing, then he should move. He's not at a critical juncture yet.
If a team is dropping 20 mil on him, they're gonna want him to play.
Dortumd brought in too many vets (not to mention Reus) who play similar roles as Pulisic. Great chance to learn though, like you mentioned. There's no rush, but he's obviously a wanted talent.