As Guardiola showed in Champions League final, responsibility to be a grandmaster can backfire horribly

Managers, or head coaches, call them what you will, are increasingly cast in the role of chess grandmasters

Paris Saint-Germain's Argentinian head coach Mauricio Pochettino

All eyes this week will inevitably be on the megastars and how the summer spending splurge might affect the fortunes of their new clubs but in reality, the Champions League is as much about managers, and the pressure on them is greater than ever.

Leo Messi, Cristiano Ronaldo, Jack Grealish and Romelu Lukaku are the biggest names under the European spotlight, but there are others you can add to the list, such as Manuel Locatelli at Juventus, André Silva at Leipzig and Antoine Griezmann, back with Atletico de Madrid.