Julian Alvarez he said he asked Manchester City to let him leave the club this summer.
Alvarez is currently on Olympic duty after winning the Copa America title with Argentina.
The striker is expected to take his summer break from the start of August and could be out of action for the Premier League champions until September.
Despite 19 goals in all competitions for City last season, in a personal best in Manchester, it is not clear about his starting role.
The former River Plate star has been linked with a switch to Atletico Madrid, but no interest has been formalized.
According to reports from The AthleticAlvarez wants a new challenge, with his family also wanting to live in a warmer climate.
City are likely to demand in the region of £65m for the 24-year-old who is currently out Atletico Madrid price range.
If Los Rojiblancos can sell Joao Felix in the coming weekswhich improves the situation, but they still push for a reduced price.
