Complex sentence: His clubs included Leicester City (for whom he played in the second leg of the 1965 Football League Cup Final), Northampton Town and Mansfield Town and he also managed Northampton Town as well as having three spells as manager of Dover Athletic, one as caretaker.
Split into simpler sentences: His clubs included Leicester City (for whom he played in the second leg of the 1965 Football League Cup Final), Northampton Town and Mansfield Town. Walker also managed Northampton Town as well as having three spells in charge of Dover Athletic, one as caretaker.