Manchester City have already seen movement both ways in the summer transfer window. Ilkay Gundogan has left on a free transfer to Barcelona after seven years at the club, and the day after Pep Guardiola lost a No.8 another one walked through the door in Mateo Kovacic.
The 29-year-old joins from Chelsea for an initial £25m and has been talked up for the ability to play two different roles in central midfield.
Whether that swap is seen as part of a revolutionary summer or an evolutionary one largely depends on Bernardo Silva. The Portugal international will be allowed to leave again this summer if he brings a suitable bid, but the club have been here before on more than one occasion and such an offer has not been forthcoming.
Bernardo is set to be pivotal because he is the most high-profile player left this summer that is up for grabs. When City clinched their first Champions League earlier this month, it was Gundogan who kept possession of the ball before Bernardo ran onto Manu Akanji's pass and laid it back for Rodri to score the only goal of the game. Also read: Man City face Premier League fixture headache owing to Club World Cup schedule For City to kick off next season without either Gundogan or Bernardo in their engine room would have the feel of a different team, another version of Guardiola's side that will take some bedding in and adaptation as happened last summer when multiple first-teamers left.