Crennel made headlines this past Saturday when he said the Chiefs would "be crazy not to consider" acquiring a quarterback as talented as Peyton Manning, who many believe will be released by the Colts before he is owed a $28 million bonus on March 8. Crennel's comments could be considered in violation of the league's anti-tampering rules, given that Manning is still under contract with the Colts.
Newsday did not cite any sources in its report.
The NFL declined to comment when contacted by NFL.com Monday. The league can investigate tampering violations without a team filing charges, and violation of the rules can result in fines and forfeiting draft picks.