Mumbai: Private sector banks, which have shied away from tagging Kingfisher Airlines chairman Vijay Mallya a ‘wilful defaulter’ as some key public sector lenders have done, say that they are exploring “all options” to recover their loans. The third largest private sector lender Axis Bank and the south-based Federal Bank, have said they have not classified KFA, Mallya and his key officials as wilful defaulters. United Bank of India, PNB, SBI and IDBI have declared Mallya and company’s directors as “wilful defaulters”.