Nah.
Thomas, Hayward, Crowder, Horford, Baynes
Rozier, Smart, Brown, Morris.
That's a solid top 9 who will get a lot of minutes.
Plus Tatum, who is a very talented rookie.
I don't see any reason, when the team is relatively healthy, why any of the rookies or other young guys will get too many minutes except in favorable matchups.