Complex sentence: In Flynn's two months at the Britannia Stadium he played well in his 13 games but when Stoke boss Gudjon Thordarson decided not to make the move permanent Flynn was on his way back to Stockport.
Split into simpler sentences: In Flynn's two months at the Britannia Stadium he played thirteen games. Then when Stoke manager Gudjon Thordarson decided not to make the move permanent Flynn returned to Stockport.