The Spurs boss made 10 changes to the side that beat Wolves 3-1 at the weekend, with Benoit Assou-Ekotto the only survivor. Despite several young players playing, Spurs were not beaten until extra time, though, and Redknapp believes the game was a worthwhile exercise for them.
"Once we got to extra-time, four of my players were cramped up and out on their feet, I knew it was going to be a difficult half-hour," he said. "I was picking the players I needed to play - I can't keep playing the same people, you end up killing them off in the end.
"It was a new experience for guys like Kyle Naughton, and Sandro looked all right, he gets around the pitch. I think he is going to be a good player.
"Steven Caulker - it was his first appearance anywhere near this level and was a good experience for him. I thought it was going to be tough when I saw their team as they looked a bit stronger than us."
Source: PA
Source: PA