A SUMMER rugby tour of Russia could await the Hong Kong national team preparing for next year's Asian Championship. Vladimir Grachev, coach of the Russian side, has invited Hong Kong to send a national team for a series of internationals next year during July or August. Grachev, from Krasnoyarsk in Siberia, is hoping the Hong Kong Rugby Football Union will consider a reciprocal tour to Russia after a visit by a Commonwealth of Independent States team to the territory last year. HKRFU chief executive officer David Roberts said the invitation is being considered in the context of next year's Asian Championship in Malaysia. Organisers of the tournament will this week confirm dates of that event, which is scheduled to be held in either April or October. Said Roberts: ''Hong Kong are hoping for the tournament to be held in April. But if that doesn't happen, a tour to Russia would be ideal to help us prepare for October. ''But we would certainly consider it, regardless. It would fit in well with our schedule for the Asian event. ''The Russians enjoyed their visit to Hong Kong last year and would like us to reciprocate.'' The CIS played three matches in the territory last year, splitting the series 1-1 with one match drawn. Grachev said that rugby has experienced a mini-boom in Russia with a merchant banking group investing a significant amount of sponsorship money into the development of the game. Meanwhile, trials will be held on November 15 for the Hong Kong squad to face Taiwan in a series of internationals in December. Both Hong Kong and Taiwan are taking part in the Asian Championships, the winner of which will qualify for the 1995 World Cup in South Africa.