In a separate interview, the Athletic's reporter said CU has lost about 70 scholarship players since Primetime took over. At this point, they've filled about 50 of those slots through transfers, incoming freshmen, etc. (again, according to the reporter). So, between now and the start of the season, they'd need to find about 20 scholarship players to get back to the max.
Being down 20ish scholarship players is a pretty big number, but is also probably similar to what frontbutt charlie and other KU coaches faced during their series of rebuilds.