"It really is poor form from Newcastle, but if that's the way they want to run their business, good luck to them."
The news is another blow to Ashley's attempts to sell the club, which has been on the market since June, following their relegation from the Premier League.
Earlier this month, managing director Derek Llambias confirmed there were at least three bids on the table, and a group of Malaysian businessmen interested in buying the club have visited Tyneside twice.
However, it appears unlikely that any takeover deal will be concluded before the start of the new Championship season in 11 days time.
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