"The writing was on the wall when the Detroit Pistons drafted Kyle Singler in the second round of last week’s NBA draft, but they have declined to offer a qualifying offer to third-year small forward DaJuan Summers – basically turning him loose on the open market whenever the NBA’s labor cloud lifts."
This doesn’t mean the Pistons can’t re-sign him, but it signals that they won’t. It just means Summers won’t be a restricted free agent, so the Pistons won’t have the right to match any offer sheets he signs.
The advantage for the Pistons not extending the qualifying offer is Summers won’t have the option of accepting a one-year, $1,059,293 contract with Detroit. Obviously, with Kyle Singler, Austin Daye and Jonas Jerebko (and I think a decent chance of Tayshaun Prince) in the fold for next season, there just wasn’t a place for Summers on this team.