REINA: 'He's a GREAT player'. If that's true, why did Liverpool sell him...?

Liverpool face a tough game against Bolton on Saturday, and one of the players likely to start the game for the Trotters is former striker David N'gog. Pepe Reina believes the Bolton game is a 'must-win' for Kenny Dalglish's team, and he's identified N'gog as a potential threat.In an interview with the official Liverpool site, Reina was full of praise for his old team-mate:"He is a great player.