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Larsson tips new boy Robbie to become a Parkhead superstar

Henrik Larsson has backed Robbie Keane to be a huge hit at Celtic after he signed for his boyhood heroes last night, but the Swede believes the Republic of Ireland striker will need the full support of his team-mates to overhaul Rangers at the top of the Scottish Premier League.

Walter Smith's side now have a 10-point lead over their rivals and Celtic legend Larsson (below) feels all members of the team will have to play their part until the end of the season.

"It's a lot of work and it's not only up to Robbie -- it's the whole team that has to do it," said Larsson. "I know they will never give up as long as there are the points to play for -- that's what it takes to play for Celtic.

"You give it your all and then see at the end of the season if you manage or not. There are always high expectations on you there, you've got to win the league and that's every year. You have to live with the pressure.

"It's fantastic news for Celtic to get a striker of his (Keane's) quality. From what I understand, he is a great fan of Celtic as well and that's important."

Despite being unveiled after midnight, thousands of Celtic fans went to Parkhead to welcome the arrival of Keane, and Larsson added: "It's fantastic up there, the Celtic fans are unbelievable.

"The way they support the team and get behind the team is fantastic. I'm not surprised they turned out in numbers because he's a very good striker and he deserves it.

"They always treated you with respect. I think that depends on how you are as a person as well, and what I know of Robbie Keane as a guy is that he's very down to earth. That's going to be very important there because you need to behave yourself always, because the eyes are on you all the time."

Keane, who will wear the famous number seven shirt, has so far refused to comment on whether he might stay beyond the end of the season, when his loan expires. But Larsson has tipped him to stay: "I'm all for it that he stays up there because Celtic need all the good players they can have."

However, ex-Celtic striker John Hartson believes any permanent move to the east end of Glasgow is unlikely for Keane.

He said: "The problem for Celtic is they don't push the boat out on wages.

"Robbie will be on massive money ... The better he does the higher the fee."