The Argentine superstar pulled his hamstring during the Blaugrana's 2-2 draw with Paris Saint-Germain earlier this month, but was fit enough to play a cameo role in the second leg last week.
However, the 25-year-old was left out of the squad for the game against Real Zaragoza last weekend as a precaution.
El Mundo Deportivo has reported that an ultrasound has found no new damage and Messi should be fit to face the Bundesliga champions next Tuesday in Munich.
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