By Ryan Merrifield Prince William will not entertain Prince Harry’s possible return to the royal fold because he “has enough on his plate”, an insider claims. The Duke of Sussex is reportedly open to returning to duties temporarily to help out while King Charles undergoes cancer treatment. But heir to the throne the Prince of Wales is alleged to have stamped out any such move. Harry’s reported proposal is similar to what he put forward before exiting the Firm four years ago, it is claimed. He returned to the UK for just 26 hours earlier this month after learning his dad was unwell. Making a fl…