Barry McGuigan, the World Boxing Assn. featherweight...

Barry McGuigan, the World Boxing Assn. featherweight champion, relinquished his British crown just hours before offers for his proposed defense against Jim McDonnell were due to be opened.

McGuigan’s manager, Barney Eastwood, said the fighter had made the decision because British title commitments would interfere with his Feb. 15 world title defense against Fernando Sosa of Argentina and with a possible super-featherweight fight against Wilfredo Gomez in May.