The NFL free-agency period started on March 18, so it's not a surprise that many of the top players who were on the market this offseason have since signed with teams and can focus on the 2020 season. That isn't the case for all of the league's top free agents, though.
Cam Newton and Jadeveon Clowney are among the players who currently don't have teams, and time is beginning to run out if the NFL opens training camps as scheduled in July. However, Newton and Clowney are talented players, and they should both be on rosters come this fall.