Complex sentence: After the 2008 season ended rumours started as to which team Martin would be racing for next season he was linked to the Rob Mac racing team which run Yamaha's in British Superbikes however this deal did not materialise.
Split into simpler sentences: After the 2008 season ended, rumours started as to which team Martin would be racing for next season. He was linked to the Rob Mac racing team which run Yamahas in British Superbikes however this deal did not materialise.