The Bundesliga holders face a difficult test at the Stade Velodrome on Wednesday night, but will be glad to have last season's top scorer available after injury
The Paraguay international has been on the sidelines after tearing a hamstring in the summer at the Copa America, but after a brief appearance in the Bundesliga at the weekend, could feature at the Stade Velodrome.
And the 26-year-old can't wait to play in Europe's premier club competition on Wednesday.
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"My son Tomas is as excited as I am," Barrios told Bild.
"My childhood dream was always to play in the Champions League. Hopefully, I will achieve that in Marseille," he stated.
With the South American set to return, and Ivan Perisic the hero in the 1-1 draw in the first group game against Arsenal, Kevin Grosskreutz may miss out on a starting spot.
However, the 23-year-old is ready to battle for his place in Jurgen Klopp's team.
"I will not let my regular place be taken away. Otherwise, I would be in the wrong profession. I am a fighter. Anyone who knows me knows that," Grosskreutz said.
Dortmund have started their campaign slowly, but picked up a morale boosting 2-1 win against Mainz domestically on Saturday, and Grosskreutz wants three points in France.
"We want to set off a firework in Marseille, to play aggressively and take the momentum from the Mainz game," he concluded.
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