We have only the minimum and LLE left to offer free agents. Has any decent free agent signed for that amount yet? I can't think of any. They usually wait throughout July in hopes some team gives them a portion of the MLE and in August when reality sets in, they'll start listening to us. This is what happened to Posey. He wanted the MLE, but eventually settled for 1/2 of that. If we sign a backup wing, it probably wont happen for a few weeks.
There are still some players available. Moon, Barnes, Udoka, Bogans, Wally, Herrman, Thomas, Graham, etc. And I'm sure Ainge is exploring his trade options. There's no rush, the season doesn't even start for a few months.