KANSAS CITY, Mo. -- The Chiefs and Trent McDuffie , the team's top cornerback, are not expected to agree to a multiyear contract extension before Kansas City's season starts, sources told ESPN on Sunday.

During the past six weeks, the Chiefs have had several conversations in an attempt to negotiate an extension with McDuffie, a two-time All-Pro who will begin his fourth NFL season in Sao Paulo on Friday, when Chiefs face the Los Angeles Chargers . McDuffie, 24, is the Chiefs' second-best defender behind pass rusher Chris Jones .

Prior to the Chiefs' practice Sunday, McDuffie acknowledged that he expects to perform this season in the fourth year of his rookie contract. He is set to earn a base salary of $2,613,066.

"Moving forward now, really, it's just about the season and about

See Full Page