THE first half of tonight's Hong Kong-Guangdong Cup second leg here will decide the destiny of the title, according to Eastern's defensive linchpin, Tim O'Shea. The 27-year-old former Tottenham defender, who was the territory's Man of the Match in their 2-0 first-leg victory at Mongkok Stadium last Sunday, believes Hong Kong can retain the trophy if they keep out the home side in the first 45 minutes of tonight'sreturn game. ''If we can hold them in the first half I'm sure we can go on and win it,'' O'Shea said. ''The onus is on them to come at us hell for leather but we've been working hard on fast counter-attacks in the hope of catching them off guard. ''If Guangdong leave any gaps at the back and we can nick one ourselves, it kills the game completely.'' Hong Kong coach Chan Hung-ping makes only one change to the side that started the first leg, replacing the injured Shum Kwok-pui with Lee Wai-man in the centre of midfield, alongside playmaker Chiu Chung-man. Lee, who was unavailable for the first leg because of a knee injury, will be asked to patrol Guangdong schemer Peng Weiguo. In a cat-and-mouse midfield, South China's Chiu can expect to be man-marked by Shandong's Fan Zhiyi, one of three players invited to join the Guangdong side from other provinces. Fan started last week's first leg at right-back in an attempt to cancel out the aerial threat of Eastern's Aussie winger Ross Greer but was moved into midfield after Hong Kong had swept into a 2-0 lead inside the first 20 minutes. Meanwhile, Hong Kong champions Eastern have secured ''big-money'' sponsorship from Italian fashion house Satchi for an exhibition match at the Hong Kong Stadium on May 11. Eastern had lined up English Premiership club Sheffield Wednesday but the match sponsors, who are believed to be putting in over one million Hong Kong dollars, insist on Italian opposition from Serie A. Peter Leung, Eastern's team manager, said they hoped to make an announcement before the end of the month. ''A lot will depend on which star players will be available at the time, bearing in mind it is only five weeks before the start of the World Cup finals,'' Leung said. The sponsors are thought to favour Internazionale, of Milan, who would demand an appearance fee of $1.2 million. TODAY'S TEAMS Guangdong (4-4-2): Ou Chuliang; Yao Debiao, Chi Minghua, Xu Hong, Li Yong; Lu Jianjun, Fan Zhiyi, Peng Weiguo, Xie Yuxin; Su Maojan, Ling Xiaojun. Hong Kong (5-4-1): Chan Sau-yin; Chiu Chun-ming, Tim O'Shea, Yan Lik-kin, Chan Chi-keung, Chan Wai-chiu; Lee Kin-wo (captain), Lee Wai-man, Chiu Chung-man, Ross Greer; Dale Tempest.