Thatcher Fee Agreed
The 31-year-old has failed to win a first-team place at Eastlands, after being banned for eight games after elbowing Portsmouth's Pedro Mendes.
City boss Stuart Pearce said at his weekly press conference, "The clubs have agreed a fee and Ben and his representatives are speaking with Charlton and that's as far as we're at at the moment".
Thatcher will now come to SE7 to undergo a medical and discuss personal terms.
Thatcher will now come to SE7 to undergo a medical and discuss personal terms.