Stay tuned for Ahram Online special coverage of the crucial game between La Liga champions Barcelona and Serie A's AC Milan in the second leg of the last-16 round of the Champions League Tuesday. The Argentine star Lionel Messi will be on the spot in attempt to accomplish Barca's hard mission as the Italian giants were able to clinch a 2-0 victory in the first leg. Probable teams: Barcelona: 13-Jose Manuel Pinto; 2-Daniel Alves, 3-Gerard Pique, 14-Javier Mascherano, 18-Jordi Alba; 6-Xavi, 16-Sergio Busquets, 4-Cesc Fabregas; 17-Pedro, 10-Lionel Messi, 8-Andres Iniesta AC Milan: 32-Christian Abbiati; 2-Mattia De Sciglio, 76-Mario Yepes, 17-Cristian Zapata, 21-Kevin Constant; 23-Massimo Ambrosini, 18-Riccardo Montolivo, 4-Sulley Muntari; 19-M'Baye Niang, 92-Stephan El Shaarawy, 10-Kevin Prince-Boateng Read the full preview here The match kicks off at 19:45 GMT (21:45 CLT). (For more sports news and updates, follow Ahram Online Sports on Twitter at @AO Sports and on Facebook at AhramOnlineSports)