Jake Livermore, having signed a new contract with the club earlier in the day, grabbed the equaliser against Barca after Bojan Krkic had opened the scoring.
The European champions fielded a team of reserves and youngsters but gave Spurs a massive test with their passing.
"It's very difficult to play under that pressure - anyone can play when given time," he added. "I should have had my youth team here to watch.
"The whole club is a credit to football. People will only talk about their passing but I saw the other side of their game."
"I haven't got a lot of options," Redknapp added.
"It was difficult with the movement they had to deal with. It was a different system, unlike a team from England when they would have a big centre-forward to play against."
Barca coach Pep Guardiola feels the future is bright with the youngsters he has available.
"There are five or six players at the top level," he said. "They are young but the season is long and it is comforting to know I can use them if there are problems."
Guardiola is determined to match Real Madrid after their summer of spending.
"We are going to try," he said. "They pay a lot of money to get players but we're going to try - we'll take the ball and attack.
"I'm convinced if we have the same spirit we are going to be there at the end of the season looking to get something."