skiguli

Obviously there's many ways to measure influence, but Franz Beckenbauer is worth a shout:

• As a player, one of the all-time greats
• Invented the libero position
• Also played in midfield with great success
• Captain of the first national team to win the Euros and the World Cup consecutively
• Captain of a Bayern team that won three consecutive European Cups
• Manager of World-Cup winning West German national side
• One of three people to win the World Cup both as player and manager
• Chair of Germany's winning bid to host the World Cup (yes, tainted by corruption)

I'd still give the nod to Cruyff, though.