Chopra, signed for £500,000 by the Welsh side from Newcastle last summer, is to discuss personal terms with Black Cats manager Roy Keane.
"I am sorry to see him go, everybody in the camp is," City manager Dave Jones told the South Wales Echo.
© Copyright PA Sport 2007, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: http://gms.to/writeforgms