Rossi will take part in the first free practice on September 22. Rossi was rushed into surgery immediately following the crash, at which point, doctors estimated it would take 30 to 40 days for Rossi to be back in condition to race. His return in just 21 days is nothing short of remarkable, after the Yamaha rider broke his leg in a motocross training accident.
Rossi missed the San Marino Grand Prix because of the leg break, but remains fourth in the world championship standings, 42 points behind world champion Marc Marquez of Spain and Italy's Andrea Dovizioso with five rounds to go.
However, the team will determine after his first practice session on an MotoGP bike if Rossi is really ready to race again or not.
Following uncertainty over Rossi's recovery, Yamaha had announced World Superbike rider Michael van der Mark as Rossi's replacement at the Aragon GP.
Getty Valentino Rossi is 42 points behind the MotoGP championship leaders
Rossi now lies fourth in the world championship standings, 42 points behind joint leaders Marc Marquez and Andrea Dovizioso, with five races to go.
Movistar Yamaha on Thursday confirmed that the courageous 38-year-old will compete in Round 14.
Rossi's fans are elated with the news he will ride at Aragon. Fortunately I am not in too much pain.
"Aragón is one of the circuits where I feel most at home and where I have good memories - adds Jorge - and so I hope to capitalize on the fact that I am racing at home to score a good result. So we wait for (Friday) and we try to understand if it is possible to ride the bike at a good level". It is coming better very day.