Spurs got back to winning ways in the Premier League last weekend with victory over Swansea to move level on points with north London rivals Arsenal.

Redknapp believes his side are now back to their best, but he accepts his men cannot afford any slip-ups with Chelsea and Newcastle breathing down their necks.

"Last week we had a good week, beating Bolton in the FA Cup and beating Swansea and drawing at Chelsea in the league, so we are in good form again," said Redknapp.

"We can't afford to drop too many points, though, because Arsenal, Chelsea and Newcastle are all right there.

"It will be a right dog fight until the end so we have to go up there and make sure we get the right result."

O'Neill praise

Tottenham travel to Sunderland on Saturday aiming to pick up their first away league win in 2012, but Redknapp is expecting a tough game against Martin O'Neill's men.

"Martin has come in, and as Martin always does he has got them up and going straight away and has done a great job there," added Redknapp. "They are a difficult team to play against.

"He is full of enthusiasm still and it's good to see him back in management again. He is a great character and a top manager.

"They had a great result drawing at Manchester City last weekend and it will be a difficult game but we have to keep going."