Lynn Stars have an early injury concern as they await further news on Danish ace Niels-Kristian Iversen after a heavy crash in his home country. Iversen was involved in a frightening first-bend tangle with Jesper Knudsen in the first race of his national World Championship qualifying meeting at Vojens on Tuesday. He was withdrawn from the meeting and taken to hospital with concussion, automatically ruling him out of the Stars’ two Premiership fixtures against Sheffield. GB youngster Tom Brennan will step in at Owlerton tomorrow night (Thursday) whilst for the return at the Adrian Flux Arena on…