The 21-year-old has been in fine form at the Confederations Cup, netting three goals
and setting up two more to lead Brazil to the final of the competition, and Messi hopes there's more to come from his new teammate at the club level.
The Argentinian Star recently visited Senegal on a Humanitarian mission to promote an anti-malaria campaign that is close to his heart.
"Neymar really is a great player and I have no doubt that he will contribute a lot," the Argentine was quoted as saying by Sport. "I hope that he can keep up his current form at Brazil with Barcelona in the new season."
The prolific attacker then went on to discuss the appointment of Carlo Ancelotti as Real Madrid coach and thinks the Santiago Bernabeu side will be back challenging for the Liga title again in 2013-14.
"Barcelona's goal will again be to fight for all trophies. We will have to compete against a great team, though. It will not be easy because Madrid have some great players," Messi said. "They already had a good coach before and have now found another great one."
Messi also had his say on Pep Guardiola's move to Bayern and believes that the former Barca boss will make the Champions League winners even stronger.
"Bayern were already a great team before Pep's arrival," Messi stated. "They won it all last season and have some fine players. The arrival of Guardiola will only make them stronger."
Guardiola started preseason with Bayern earlier this week.