st james ' park in protest at the way the sportswear tycoon is running the club , with the official attendance of 47,427 - the capacity of the stadium is in excess of 52,000 - understood to include many that protesters are calling for a repeat when swansea head for tyneside on saturday , but mark jensen , editor of online fanzine www.themag.co.uk .
newcastle owner mike ashley has been urged to invest in the club or risk losing a generation of fans .