Clearly not skint. They've signed Drew Surman too.
http://www.skysports.com/story/0,19528,11688_6221648,00.html
Regarding Jackson - He's out of contract at the end of next season, so that's probably why he's available on the 'cheap'
http://www.skysports.com/story/0,19528,11688_6221347,00.html