However, despite Bale's visible discomfort, Redknapp insisted it was just a minor knock.
"It shouldn't be too bad, " Redknapp said. "He got a knock but he'll get plenty of them over the next few years."
Redknapp also confirmed midfielder Luka Modric was unscathed after being frequently "chopped down" by Arsenal defenders.
"He is a tough little lad," Redknapp added. "He gets up and gets on with it."