I would just put in brackets something like -(you dont pay it till 7/14/2017, you pay the actual total amount of your player salaries), maybe that would be clearer, i just wanted to pint out that it can make some new managers confused
"Player Salaries Floor: $ XXXX (you dont pay it till 7/14/2017, you pay the actual total amount of your player salaries)
The salary floor does not apply to new teams for their first 24 weeks. Your grace period ends on 7/14/2017."
I`m the nicest person you will know:)