Spurs staged one of the greatest comebacks in the history of the north London derby to win 3-2 at the Emirates Stadium and put them right back in the thick of what manager Redknapp dubbed the most open title race ever.
"It's wide open this league this year, it's wide open," said Redknapp. "Why should we all be fearful and keep saying, 'We can't win it'? I wouldn't be saying it if we had a bad group of players. I'm a realist; I'm not dreaming."
He added: "Chelsea are not as good as they were; Man United are not as good as they were three or four years ago.
"They're still excellent teams but they're not the force they were.
"They were almost invincible, the pair of them. I think Tottenham are now getting closer and the championship is wide open.
"I said that to the players Friday morning. Why can't you win the championship? Who says you can't?."
He added: "It's wide open for somebody who can put a run together. It's there for someone to have real go at it this year.
"It's difficult to do but it's not impossible. This is the best chance anyone's going to get this year.
"There's very little to choose between the top five or six teams at the moment."
Source: PA
Source: PA