English Premier League club West Ham United are interested in signing Brann Bergen youngster Azar Karadas as soon as possible. The London club invited the striker-turned-defender for trials last Monday, but Brann refused Karadas, 20, permission to leave in mid-season for trials, the newspaper Bergens Tidende reports. 'Several clubs have made contact and seem to be quite interested in Azar, which I must say is remarkable having in mind that he is only a substitute at Brann,' Karadas