Arsenal have made an offer for Leicester City midfielder Riyad Mahrez , just days before the new season gets underway .
The reigning Premier League champions have rejected the bid and reiterated that midfielder is not for sale .
Arsenal have made an offer for Leicester City midfielder Riyad Mahrez , just days before the new season gets underway , but the reigning Premier League champions have rejected the bid and reiterated that he is not for sale .