Speaking at a news conference ahead of his side's opening Bundesliga game at home to Mainz, Tuchel said: "We decided that it's too early."
It's all change at Borussia Dortmund this season but Thomas Tuchel has crafted an exciting squad ready to challenge at home and in Europe.
Europe's top four leagues will have four guaranteed places in the Champions League group stage from the 2018-19 season, UEFA has confirmed.
Thomas Muller dismissed suggestions Bayern Munich do not take the German Supercup seriously as they attempt to end a four-year wait to lift the trophy
Schalke have confirmed their interest in Arsenal winger Serge Gnabry, but have played down reports they could sign Tottenham winger Son Heung-Min.
FC's Raphael Honigstein gives his take on whether or not Dortmund and U.S. international Christian Pulisic will stay or go.