A leading extradition law expert has rejected the Hong Kong justice minister’s dismissal of key counterproposals to a controversial extradition bill, saying there is no problem collecting evidence overseas and using it in local courts to try a murder suspect wanted in Taiwan.Senior counsel and former senior prosecutor Michael Blanchflower’s remark came after Teresa Cheng Yeuk-wah, herself a leading civil lawyer before taking public office, last week shot down a proposal to extend the power of…