Real Sociedad fear losing young star Mikel Oyarzabal to Manchester City.
AS says City have identified Oyarzabal as a potential replacement for Bayern Munich target Leroy Sane.
They have already contacted the player's camp and assured him they'd be prepared to pay his 75m buyout clause should La Real refuse to do business.
It would be a massive blow for Real Sociedad should they lose the Spain U21 star, having just handed him the No10 shirt.
There is real fear inside La Real that City will make a formal move in the coming days.
