Redknapp was targeted himself by Aston Villa supporters last month while he was manager at Portsmouth, with a coin missing him and hitting assistant referee Phil Sharp.

This week Didier Drogba has been charged with violent conduct by the Football Association - and is also the subject of a police investigation - after appearing to throw a coin back at the Burnley section of the crowd at Stamford Bridge.

Since the incident the focus has been on the Chelsea striker rather than the behaviour of people in the stands.

"Something needs to be done around the dug-outs now, it's got silly at certain grounds," Redknapp said. "It's difficult with players too because some of the abuse is over the top, there is no doubt about it.

"There are cameras all around the place so surely we can pick these people out. Someone has to pick up the phone, even if they are scared. Make a phone call and report the person.

"They should be banned for life from football grounds because there is no place for them in football."

Redknapp has not been made aware of the culprit being found at Villa Park, and the incident still angers him.

"It was scandalous," he said. "What had I done to deserve that? Nothing. What did I do to deserve the abuse I got that day? Nothing.

"I don't know what turns people on to do something like that. If they hit the linesman or me in the eye, we would have lost an eye.

"That can't be right. They have enough cameras there, surely someone must have seen them throw it.

"People who throw coins are cowards. Do you think he would have gone up to Didier Drogba off the pitch and said something to him? I doubt it very much."

Since the incident at Villa Park, Redknapp has moved to Spurs and turned their season around with five wins and a famous draw against Arsenal.

Damien Comolli was heavily criticised for the players he bought for previous boss Juande Ramos, but Redknapp has been working with the same squad.

The new Spurs boss was also a fan of Younes Kaboul, a Comolli find who failed spectacularly at White Hart Lane before Redknapp took him to Pompey.

"Kaboul has got everything if you look at him, his pace, his heading, his passing, he just needs to sharpen his game up and I think Tony (Adams, the Portsmouth manager) can do that with him," Redknapp said.

"He will make a player out of him but it's about working with him on the training ground and talking to them.

"People come to me, coaches, and say 'he can't do this' and 'he can't do that' and I go 'that's your job to teach him that'."

Spurs' revival has led to Redknapp's English players being in line for a call-up to Fabio Capello's squad for next week's friendly in Germany.

Darren Bent has scored 11 goals this season, David Bentley has recaptured his form and Jermaine Jenas is fit. Redknapp also rates Ledley King and Jonathan Woodgate as international-class defenders.

Another player putting himself in the frame is midfielder Tom Huddlestone, who has previously been criticised for his mobility.

But Redknapp said: "He's been mobile and his control and his passing is almost Hoddle-like.

"You wouldn't say Glenn Hoddle was that mobile, would you? He wasn't a box-to-box runner, but he could get on the ball and hit a 40-yard pass and put people in. He was just amazing.

"Tom has that type of ability I think."

Redknapp is also nurturing homegrown coaching talent, with former Spurs striker Les Ferdinand brought in to work with the forwards.

"Les still looks fit," Redknapp said. "I think all the tea ladies around the place were pleased to see him back."