Teams have supposedly inquired about the availability of Clay, Aceves and Morales, and were told no on all three counts.
If teams are seriously offering something of value for Lester (who has officially become a reclamation project) and the Red Sox deemed him "untouchable" then that's as clear an indication as any that they actually think they can compete this year. Couple that with their repeated attempts to obtain JJ and Garza right now even though their price would be higher than in the off-season, and it seems as clear as day.