Alexandre Pato and Milan’s medical staff “found the answers we were looking for” in America and the striker should be ready to face Barcelona.
The Brazilian has struggled all season with recurring muscular injuries and underwent a specialist consultation in Atlanta, Georgia.
“Pato is absolutely fine and I’d say we found the answers we were looking for,” said chief Milan medic Jean Pierre Meersseman.
“We return home with a clearer idea of the situation. Could Pato play on Tuesday against Barcelona? Absolutely, he is ready and will certainly be at Coach Massimiliano Allegri’s disposal.”
Pato has good history at the Camp Nou, having scored in the opening minute of their 2-2 group phase draw.
The second leg of the Champions League quarter-final is on Tuesday evening and the first leg ended 0-0.
View the latest World Cup 2014 odds and betting here