De Bruyne turns 34 in June and is seeing his minutes managed more and more by Guardiola, who has also been fielding Mateo Kovacic, Ilkay Gundogan and Bernardo Silva, all of whom are 30 or older, in midfield. City signed Omar Marmoush, Nico Gonzalez, Vitor Reis and Abdukodir Khusanov in January as they attempt to bring down the average age of their squad and the signing of Wirtz would be an enormous statement.