However, despite his lack of knowledge about the 20-year-old's ability, Jagielka has revealed that video footage will have him fully prepared in time for the encounter.
"I don't know a lot about Neymar," he said. "We don't see a lot of footage. He plays in Brazil so it is tough for us. But we have video analysis people when we meet up with England and they will have plenty of footage for us to review.
"They will pick out his good points and bad ones. I am sure the good points will be going on for hours."
Neymar has made 26 appearances for his country, scoring 17 goals.