State Universities Retirement System of Illinois, Champaign, has placed international manager Global Asset Management on "interim review, said James Hacking, executive director of the $10.8 billion fund. It usually looks at its international managers in December, but the early move was spurred by last months resignation of portfolio manager John Horseman. Fund executives and GAM representatives were scheduled to meet today to discuss State Universities of Illinois international portfolio. "We want to find out what prompted John Horseman to leave and whats going to happen to our portfolio, Mr. Hacking said. Executives from GAM could not be reached for comment. GAM runs about $142 million in international equities for the fund. Its performance for the year ending June 30 was -5.7% vs. the EAFE index return of 7.6% over the same period, he said.