Bayer Leverkusen coach Xabi Alonso has said that he and the team are not bothered by speculation about his future as the Bundesliga leaders aim to stretch their unbeaten run to a German record 33 matches on Friday against lowly Mainz. New speculation arose on Wednesday when Bayern Munich announced that they will part ways with Thomas Tuchel after the season. Alonso would be a hot candidate as ex-Bayern player and due to his success in Leverkusen, but he is also said to be sought by another former club, Liverpool, in succession of Jürgen Klopp. Aware of the rumour mill, Alonso started Thursday’…