File photo dated 31-01-2015 of Manchester City's David Silva (left) celebrates with team mate Sergio Aguero (right) after scoring his sides first goal of the game. Sergio Aguero has announced his retirement at the age of 33, it has been confirmed. Issue date: Wednesday December 15, 2021.,Image: 216880867, License: Rights-managed, Restrictions: FILE PHOTO Editorial use only. Maximum 45 images during a match. No video emulation or promotion as 'live'. No use in games, competitions, merchandise, betting or single club/player services. No use with unofficial audio, video, data, fixtures or club/..., Model Release: no