Not sure where I got £30k from, thought I'd read it on here somewhere but could only the comment about £19k.
Not that reading it on here would make it true.
I've checked the old thread and the suggestion from El Presidente was that he was on £19k before being given a new contract.
http://www.northstandchat.com/showthread.php?342608-Lewis-Dunk-signs-new-5-year-contract!/page2&highlight=Lewis+dunk