The London club are holding talks with the Baggies over the
proposed transfer of the Chinese captain.
Zheng joined Charlton in December 2006 on loan and was
subsequently signed permanently the following summer despite the
fact that the Addicks were relegated to the championship.
The midfielder’s impressive performances in the second tier have
alerted West Brom.
"We are in discussions with West Brom and they are ongoing,"
said Charlton coach Alan Pardew.
"There are lots of discussions on all sides, but I don't think
it's anything to do with the work permit because he's the China
captain and their best player.
"I don't think there is a problem with that, it's just between
ourselves and West Brom, taking into account the player's
commitments as well."