It took Tottenham until the second half to break through a stubborn Bolton rearguard at White Hart Lane, in a match which was rescheduled after Fabrice Muamba suffered a cardiac arrest on the field during the original tie.

Ryan Nelsen, Gareth Bale and Louis Saha all scored as Tottenham set up a semi-final against London rivals Chelsea, but Redknapp believes any of the teams left in the competition can win it.

"Yes I am looking forward to it (semi-final), it will be a great weekend. Two great games a London derby and a Merseyside derby with Everton and Liverpool, two fantastic games," Redknapp said.

"I think all four teams could, you wouldn't like to pick a winner would you. Everton and Liverpool are both capable of winning the cup aren't they. Chelsea have gone to Benfica and won in the Champions League, a fantastic result but it is wide open really."

It looked like Bolton might cause an upset after keeping Spurs at bay in the first half, but Redknapp said he was confident the goal would come.

"I always felt the goal would come, we couldn't play any better than we did tonight, it was so one-sided," Redknapp said.

"I said at half-time that if we keep playing the way we are then the goals will come. I like the way we played, the system we played, and I think it suits us and eventually the goals came."

Redknapp also stopped to wish Muamba the best in his recovery, with the midfielder still in hospital after his heart stopped for more than an hour.

"You know what has happened the last week has been a miracle really to see the boy recover as he has done," Redknapp said.

"We are not quite there yet but everybody's spirit couldn't be better because when he left here that night we all feared the worst. To keep getting good reports every day is just great news."

Bolton manager Owen Coyle remained upbeat despite the loss, saying his side would now refocus on ensuring their Premier League survival.

"We're out of the cup now, we wanted to go as far as we could but what we have to do now is focus on the Premier League," Coyle said.

"Make sure we remain in the league and I've said consistently all season that we have enough quality to do that.

"Have we been beset by injuries? Yes but we still have enough quality with young players that continue to get better.

"(It's important) that we get enough points and that we stay in the Premier League, which I'm convinced we'll do."

Coyle earlier in the day issued a public thanks to Tottenham for the support their staff, players and fans have given the club and Muamba.

In his programme notes, the Bolton manager said that the club and the player's family were immensely grateful for the well-wishes and support.

"On behalf of everyone at Bolton Wanderers and our supporters, I would like to offer our sincere thanks to Tottenham Hotspur - the staff, players, management and fans - for their support for Fabrice and his family at this difficult time," he wrote.

"We have been truly humbled by the care and concern shown by you all for Fabrice.

"Harry (Redknapp) has been in touch regularly to check on Fabrice's progress and Spurs chairman Daniel Levy has been in regular contact with our chairman Phil Gartside.

"The family have appreciated the many messages of support from Spurs fans.

"Tottenham's club doctor Shabaaz Mughal, the medical team and paramedics in attendance at White Hart Lane last Saturday played a vital part in giving Fabrice the best possible chance after his cardiac arrest and I would like to thank them all.

"I would like to ask you to keep Fabrice and his family in your thoughts and prayers as he continues his recovery.

"He has a long road ahead of him and the messages of support have been a great source of strength and energy for everybody. Thank you all."