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The 49ers appear willing to do business with those who will do business with them.

According to Matt Maiocco of CSNBayArea.com, 49ers General Manager Trent Baalke said the team wanted to try to extend both guard Mike Iupati and wide receiver Michael Crabtree before they become unrestricted free agents next spring.

“We’re going to try,” Baalke said. “We’re going to work at it, certainly. But at some point, you got to stop negotiating deals and let these guys concentrate on playing football. I don’t know what point that is. We’ll make that determination as a club.

“But we’re certainly going to work toward that goal. Those are two very good football players, and guys we’d love to have in this organization for the long term.”

They can tag one or the other next offseason if they choose, buying time. Then again, Maiocco points out they’re not particularly close to deals for either Crabtree or Iupati, so at this point it’s just talk.

But talking about extending good players is also a way of extending a finger, perhaps the one in the middle, toward holdout guard Alex Boone.