SING Tao last night sent out an SOS call to former Hong Kong national goalkeeper Chan Shu-ming to play in today's friendly match against the Hong Kong national team. The 34-year-old Chan retired from professional soccer at the end of the 1992-93 season when his club Ernest Borel folded and he began work as a watch sales executive. He later changed his mind and joined Happy Valley as a part-time 'keeper at the beginning of last season before the arrival of Beijing 'keeper Li Lixin. Sing Tao manager Shum Wang-ho said Chan would play for them in the friendly game and possibly their league clash against Eastern on December 28. The team's present first 'keeper Harvey Lim injured his ribs in the Senior Challenge Shield second round match against Rangers on November 29, while his reserve Cheng Wing-keung broke his arm during training. But the 27-year-old ex-Gillingham 'keeper Lim said he is not worried about his long-term position at the club. 'I have only let in one goal in the past four matches,' said Lim. 'I don't mind if they sign 10 new 'keepers because I know I can be the best.' Meanwhile, Kui Tan have signed 23-year-old striker Lee Luscombe from English League Second Division side Brentford. He arrives in the territory on Wednesday for a one-month trial.