I support this post.Improve? For sure. He'll get so many soft FKs for KDB to score.
Massively? Who knows. He needs to adapt to Tiki-Taka like Mahrez has had to, who imo is more talented.
Grealish is a ball-hog who is sometime guilty of overplaying.
Pep likes tip-tappy bellend, where the emphasis will be on a lot of short, crisp passing. He'll also need to deal with the fact he's competing against top players week in, week out.