The other £20,000 obviously came from the club and the directors, but it is good to know that the supporters association are able to fund transfer bids. From reading the info on it, it seems that the £10,000 was raised by purchasing shares in the club, and SMISA members voted to put it towards a transfer fee. Good stuff.
To try and raise more money for the club, SMISA are auctioning a training top signed by the current squad. To bid on it visit http://www.smisa.net/