Sir Paul McCartney has suggested Heather Mills open her gardens to the public to pay off her debts.

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The animal rights campaigner is reportedly seething after her estranged multi-millionaire husband made the suggestion as a way of helping to settle her growing legal bills in their divorce battle.

A source said: “Heather is in a bit of a pickle money-wise. She has mounting debts.

“Paul has suggested even opening her gardens to the public. Heather is furious because she feels Paul made the suggestions in a sarcastic way. She also thinks they’re unworkable and, to be quite honest, ridiculous. As if she can open up land around her home – she’ll have all sorts coming in and invading her privacy.”

Heather – who lost her left leg below the knee in a motorcycle accident in 1993 – and Paul, 65, have a four-year-old daughter Beatrice together.

The couple are due to begin their divorce battle in the London courts next month.