The San Francisco 49ers reportedly allowed Brandon Aiyuk the opportunity to negotiate potential contract extensions with at least four NFL teams, including the Patriots, and New England extended a proposal.

That was included in a bombshell report from NBC Sports Bay Area's Matt Maiocco on Monday night. Maiocco also reported the Patriots constructed the framework of a trade for Aiyuk, which San Francisco has approved.

"The Browns and Patriots have given their best offers to Aiyuk’s camp while also presenting trade proposals that the 49ers have accepted," Maiocco wrote.

Maiocco did not report on the terms of New England's contract proposal. Aiyuk, a first-round pick in the 2020 NFL Draft, is set to play on his fifth-year option and has sat out training camp due to his unhappiness about his contract situation.

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Maiocco reported the 49ers allowed Aiyuk to negotiate with the Washington Commanders, Pittsburgh Steelers, Cleveland Browns and Patriots. The Commanders removed themselves from trade talks while the Steelers are no longer considered an option as they declined to meet San Francisco's trade demands, per Maiocco.

The Patriots reportedly are competing with the Browns for Aiyuk. It's now up to Aiyuk to determine if he will accept the extension terms from either the Patriots or Browns, Maiocco wrote.

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Maiocco did not report exactly what New England's trade offer was, but noted it likely would include veteran receiver Kendrick Bourne and draft capital.

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