The bid is expected to be as large as 410p a share in cash, which values M&S at£10.5 billion, and tops the offer Philip Green made last year by 10p a share.
According to the newspaper, 11 per cent of M&S shareholders are thought to back the bid and once 75 per cent is reached the bid will be triggered.
Paulsmeier expects the bid to be hostile because he feels the M&S board is unlikely to support it.
Little is known about Paulsmeier and his US venture capital backers Oakwell Associates, which claims a funding capacity of£61 billion.
Analyst estimations of a likely bid are slightly lower, but Seymour Pierce analyst Richard Ratner was sceptical that an offer will emerge from Paulsmeier. He said: 'Anyone who is prepared to go hostile at£9 billion without access to the books, especially given the pension issue, needs to see a shrink.'
M&S refused to comment on the speculation.
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