BRUSSELS, Belgium — European countries are wrangling over how to address rising market panic about the health of their banks, with some pushing for a concerted effort to recapitalize struggling lenders while others are reluctant to put up more taxpayer money. The International Monetary Fund, which has been a key player in the eurozone’s debt crisis, on Wednesday renewed a call on the continent’s leaders to quickly steel banks against worsening market panic. The IMF has said as much as $266.74 billion may be needed to boost banks’ capital buffers, although some of that money could come from private investors.