Beaten by eventual winners Liverpool in last year's semi-finals, Barcelona are looking to reach the heights again in the Champions League.
Last winners in 2014-15, Ernesto Valverde's men are in Group F this time round - and start their campaign with a tough tie at free-scoring Borussia Dortmund.
There are doubt about Lionel Messi's fitness - and hopes among many that the scintillating Ansu Fati starts.
If he does, at the age of 16 he will become the youngest Barca starter in their Champions League history.
