Berbatov left Spurs on transfer-deadline day after demanding a move to Old Trafford and is set for a hostile reception tomorrow if he overcomes an Achilles injury.

Redknapp was abused by Portsmouth fans when he moved to rivals Southampton, then moved back to Fratton Park and earlier this season witnessed fans target Campbell, who famously moved from Spurs to Arsenal in 2001.

A group of supporters face questioning by police investigating racist and homophobic chanting at Campbell - and Redknapp insists that was a different situation to Berbatov's.

"What happened with the small section at Portsmouth was not about booing or cheering a player - that was different," said Redknapp.

"Getting stick is part of the game. You leave a club and you get a bit of grief or abuse when you go back. We accept that, and it happens.

"As long as it's not racist abuse or anything they're entitled to shout, jeer or boo or whatever they want to do.

"Berbatov might get some stick but he won't get the type of abuse Sol got, which was definitely out of order.

"Alex (United boss Sir Alex Ferguson) would tell them that there is only one way to keep them quiet and that is to put it in the back of the net. That is what I would say to a player."

Redknapp also reminded Spurs fans that the club got more than £30million for a striker that did not want to play for them.

"He was a good player here and the club got fantastic money for him," Redknapp added.

Redknapp is hoping skipper Ledley King will be ready to face Berbatov or United's other strikers for the Barclays Premier League clash.

King had a "loosener" with the rest of the squad but a decision on whether his knee can take the strain of two games in six days will be made at lunchtime on the day of the game.

Redknapp, who saw King score the opener in the win over West Ham earlier in the week, said: "He normally takes all week to recover so playing on Monday has made it more difficult."

Redknapp accepts that Spurs look a different team with King at centre-back and has urged the 28-year-old to do all he can to prolong his career.

"He's a very important player for this club," Redknapp said. "We need to keep him going as long as we can because he is such a fantastic player.

"He has to make sure he looks after himself. If he does that then it will prolong his career.

"He's an international player of the highest quality when he is fit."

Meanwhile, Redknapp insists winger Aaron Lennon is not for sale despite reports former Spurs boss Juande Ramos wants to take him to Real Madrid.

"Aaron wasn't playing that much when he was here," Redknapp said. "He's a player with a big future here so he is not for sale."

Redknapp also dismissed suggestions he is willing to listen to offers for striker Roman Pavlyuchenko.

"He's a quality player," he said. "How can I be unloading anyone?"

With on-loan forward Fraizer Campbell ineligible to face his parent club, Pavlyuchenko or Darren Bent are likely to play against United, with Luka Modric given the free role as support forward.

Spurs have not beaten United since 2001.

Redknapp, when confronted with the record, replied: "Right, in that case I probably won't go. My wife wanted to go Christmas shopping anyway so I'll probably go to Woolworths."