Where would Man City be without David Silva? Sergio Aguero's goals have been vital, but the little fella pulling the strings behind him is more important, isn't he?
Who else would be sorely missed if they were out of their respective Premier League side? Wilfried Zaha hasn't played for Crystal Palace since the opening game of the season and look what has happened there. West Ham, meanwhile, are surely missing the creative talent of Manuel Lanzini.
Is David De Gea Man United's key man? Tottenham would be lost without Harry Kane's goals, right?