Mystery surrounds Aubameyang suspension

Pierre-Emerick Aubameyang has been suspended from Borussia Dortmund's squad for their Champions League clash with Sporting CP for "internal reasons". Gabon forward Aubameyang - Dortmund's top-scorer with 10 goals in 13 games across all competitions this term - had been expected to start at Signal Iduna Park on Wednesday. However, in a late alteration, the 27-year-old was omitted from Thomas Tuchel's matchday squad, though no reason has yet been given for Aubameyang's omission. And, prior to Wednesday's Group F fixture,  Tuchel confirmed that the striker had been handed a short-term suspension.