General manager John Lynch says the San Francisco 49ers will not rush into a decision over whether to offer new recruit Trent Williams a contract extension.

Left tackle Williams was traded to the Niners from the Washington Redskins on Saturday.

The arrival of Williams, who is in the last year of his contract, came on the same day in which Joe Staley announced his retirement after 13 seasons with San Francisco.

Williams did not feature in the NFL last year due to a dispute with the Redskins, who received a fifth-round pick in this season's draft and a third-round pick in 2021.

The Niners, beaten by the Kansas Chiefs in the Super Bowl in February, are excited to have landed Williams but are in no hurry to tie the 31-year-old down to a long-term contract.

Lynch said: "I think the plan was to land him right now and then let the rest kind of work itself out.

"I think it's always an advantage when you get someone in the building, on your roster. Now you've got a chance.

"We'll get a really good look at him. We'll see where the rest of our team is at, but right now we are just ecstatic that we were able to pull it off at a really opportune time.

"You're losing a great player like Joe at a very critical position, to be able to have everything line up that he was available right then and for us to be able to land him, I think very fortuitous for us, and we're very excited about that."