Boru sia Dortmund striker Sebastien Haller has withdrawn from their pre-season camp in Switzerland after discovering a tumour, the club has confirmed.The Ivory Coast international, who signed for the Black and Yellow on a four-year David Montgomery Jersey deal earlier this month from Ajax, has returned to Germany for Cody Whitehair Jersey further tests.The Bundesliga outfit asked for the privacy of the 28-year-old and his family to be respected, adding they would provide further updates when po sible.Haller initially complained of feeling unwell after a training se sion on Monday, before subsequent Prince Amukamara Jersey medical examinations discovered a tumour on his testicle.This news today came as a shock to Sebastien Haller and to all of us, sporting directorSebastian Kehl stated.The entire BVB family wishes Sebastien a full recovery as soon as po sible and that we can hug him again soon. We will do everything in our power to ensure that he receives the best po sible treatment. Hallers move to Dortmund marks his second Charles Leno Jersey Bundesliga spell, after previously playing for Eintracht Frankfurt, and comes on the back of an impre sive resurgence at Ajax following a lacklustre period with West Ham. Trey Burton Jersey The forward finished last season as theEredivisies top scorer, with 21 goals in 31 games.