AUBURN HILLS -- The Detroit Pistons have some major acquisition methods still to exhaust but their roster clarified greatly with last week's trade for Ersan Ilyasova.

Assuming the Pistons exercise their option on Anthony Tolliver for next season, they will enter July with 10 of a maximum 15 roster spots filled by players on guaranteed contracts, including one slotted for their first-round pick in next week's NBA draft.

The Pistons also have a second-round pick who potentially could take an 11th roster spot.

Pistons president-coach Stan Van Gundy said Tuesday that the focus going into the draft and free agency has tightened considerably, with small forwards and backup centers the key targets.

That includes the Pistons' No. 8 pick in the June 25 draft, a spot where several promising small forwards should be available. Van Gundy's hope is to draft a player who will be a rotation piece next season and "the best player three years down the road."

The Pistons will search on the open market next month for a starting small forward.

Any splurge in free agency almost certainly will come at that position.

"We've got to go get a small forward we can count on to play," Van Gundy said. "We've got to get backup big guys that we can count on to play. The draft picks -- not even talking about 38, even at eight -- the draft pick's a guy that we hope can play, but hopefully can come along slowly a little bit, not be forced to have a lot of pressure on him."

The Pistons have one small forward going into July, Cartier Martin, who was not part of the rotation last season. They need two players there.

They also need three backups for center Andre Drummond and power forwards Ilyasova and Anthony Tolliver.

How the Pistons make those decisions hinge on several variables besides the identity of their first-round draft pick:

• Whether they need a fourth point guard to compensate early in the season for Brandon Jennings' return from a torn Achilles, which he suffered in January;

• Whether a 3-point-reliant team can afford to begin the season with as few as five wings;

• Whether they want to bring their No. 38 pick to training camp or make that player an international draft-and-stash prospect, which could hold a bit more appeal under the threat of needing an extra point guard, though that player also could be a deep-bench big man or wing.

With a decision on a fourth point guard delayed pending more information on Jennings' recovery -- he is on schedule to begin running in August -- Van Gundy could have to decide between either five bigs or five wings (he would prefer six of each) before knowing Jennings' status. The open roster spot could be filled accordingly.

Van Gundy already may have made that decision.

"We've got to probably have six bigs. And we may take a fourth point guard into camp. But we haven't decided that yet," he said.

Ilyasova addressed a major need for a floor-stretching power forward.

The Pistons' second-biggest priority this summer, after finding a starting small forward, is a high-quality center to back up Drummond and compensate for almost certainly losing Greg Monroe via free agency.

Still, it can't be a comfortable feeling for Van Gundy, who emphasizes long-range shooting like no coach in Pistons history, that he goes into the draft with a total of three true shooting guards and small forwards under guaranteed contract for next season -- Kentavious Caldwell-Pope, Jodie Meeks and Martin -- who shot 33.8 percent collectively on 3-pointers last year.

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