Redknapp said: "When you are down to 10 men and you are one-nil down it's a point gained in the end, but on the balance of the game it was two points lost.
"Of course, there was frustration because a win today and we were guaranteed fourth place but it's all to play for still. There's one game left and look at the permutations.
"We've all got tough games next week. No one has got an easy game so it will be an interesting last game of the season."