The NFL said it could not conclude that the Washington Redskins committed tampering in landing prized free-agent defensive tackle Albert Haynesworth in free agency.

The Redskins landed Haynesworth at the very outset of free agency, signing him to a $100 million, seven-year contract that includes $41 million guaranteed. The Titans had accused Washington of going to work early on Haynesworth.

The Redskins have also assured the league it will review anti-tampering rules with club officials in the future.

The league said it completed an “extensive review.” Tampering is a very difficult charge to prove.

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