Complex sentence: The club brought in Dave Russell as manager who revolutionised the club--bringing in the all-white strip used today and developing a successful youth policy which saw many club stalwarts through its ranks--including England international Roy McFarland.
Split into simpler sentences: The club brought in Dave Russell as manager who revolutionised the club. Russell also developed a successful youth policy which saw many club stalwarts through its ranks, including England international Roy McFarland.