Renowned Brazilian Ronaldinho urged his former team's players not to relax ahead of the upcoming UEFA Champions League quarter-final match against "Man Utd" club.
The first meeting in Manchester ended with a 1-0 victory for the visitors.
"The truth is, 'Barcelona' had to finish off their opponents at 'Old Trafford' stadium, and the minimal loss gave the English hope that not everything is lost yet.
Looking at the playing style of the Catalan team and the number of goals they score, I could predict that they will advance to the next stage.
I see 'Barcelona' confidently winning at home, and everything will depend on the first goal.
If the hosts score, then 'Man Utd' faces a long night. Otherwise, tension could arise in the stadium, and then you never know what might happen," said the Brazilian.