Yes they currently have three players in the top 100 according to MLB. Rojas (63), Hartshorn (74) and Wiggins (88). Would need to be a combination of the three above plus others. Brewers could easily beat this but I prefer they don’t.
A Slubal trade would be the only major trade the Cubs would be able to do. After their first three prospects and really Wiggins is not having a good year there is not much there for the Cubs to trade away.