Just looked at the numbers of Clemson's recruiting classes going back to 2013. They signed 105 players in the five classes in the time frame. They've lost 21 players from the 2013, 2014, and 2015 classes from what I can tell (transfers, quitting, dismissal, and NFL). They also had six players listed on their roster as "rsSR and rGr." I don't include those six guys since they wouldn't be on the 2017 roster.
Assuming my math is right, they have 84 scholarship players. They've redshirted 24 guys from the 2014 and 2015 classes. Don't we all expect that Hunter Renfrow kid to be on scholarship by now? That would make 85 guys.
Regarding the 2018 class, I only see 9 guys entering their senior year. Dabo better hope he has some young guys blossom to the point of declaring for the draft early.