Complex sentence: Whitehead made a slow start to his Stoke career with a number of anonymous performances; however, following a 0--0 draw with Blackburn Rovers he has since become an influential player for City and has earned praise from manager Tony Pulis.
Split into simpler sentences: Whitehead made a slow start to his Stoke career with a number of anonymous performances. However, following a 0--0 draw with Blackburn Rovers, he earned praise from manager Tony Pulis.