The Raiders have re-signed backup quarterback EJ Manuel, Field Yates of ESPN.com tweets. Terms of the deal are not yet known, but his spot on Jon Gruden‘s 53-man roster may not be a lock. 
The Raiders still have 2016 fourth-round pick Connor Cook under contract and they added free agent Josh Johnson earlier this month. Only two of those three QBs can stick around to play behind Derek Carr and there’s still the possibility that Oakland will draft a signal caller in April.
Last year, Manuel appeared in two games for the Raiders in Carr’s absence. He completed just 24 of 43 throws with one touchdown against one interception. The Raiders lost both of those games and Carr returned to action in Week 6.