Former Celtic star John Hartson believes that whomever replaces Ronny Deila must have a connection to the Scottish club and a full understanding of its history.

Writing in his column for the Scottish Sun, the striker says that the Norwegian may have known about the club before he arrived in Scotland but he didn't have any idea about the demands that would be placed upon him:

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"For me the manager should also have a connection with the club. Sure, Ronny Deila knew of Celtic when he arrived. But he didn’t have a clue about the demands that came with managing the club."

"The new man should know what it means to wear the shirt, the expectations for winning Doubles and Trebles."

Hartson believes the next manager must be stronger with the club's board, and ask for a larger transfer budget from chief executive Peter Lawwell and majority shareholder Dermot Desmond in order to qualify for the Champions League group stages after failing to get past the qualifying rounds in recent seasons:

"How much the new manager will be given I don’t know.But he needs to be a strong individual, someone who can talk to Peter Lawwell and Dermot Desmond about what’s needed."

"Celtic need to be playing on the big stage in Europe. They want to bring those times back. But in recent seasons they’ve lost Virgil van Dijk, they’ve lost Victor Wanyama, they’ve lost Gary Hooper and they’ve lost Fraser Forster and they’ve filled the coffers with over £20million. They need those types of players back. It might cost a few quid but that’s what Celtic need if they’re to progress in Europe."

Celtic's new manager won't have much time to prepare his new squad for the crucial European matches at the start of the season as the Champions League qualifiers take place in mid July.

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