Former All-Pro cornerback Nnamdi Asomugha, who signed a five-year, $60 million contract with the Philadelphia Eagles in 2011, will retire as a member of the Oakland Raiders after 11 years in the NFL.

The Raiders said Asomugha, 32, will announce his retirement officially at a news conference at team headquarters Friday.

Asomugha had his greatest success in the NFL with the Raiders, totaling 11 interceptions after being drafted in the first round out of California in 2003. He earned three Pro Bowl selections in eight seasons in Oakland and was a first-team All-Pro in 2008 and '10.