Yes they must score. But if they do manage to score first, it then puts us on the back foot and a second away goal from them could finish it off against us. Yes we are strong favourites but our last 2 performances at home in the CL have been poor (0-0 draw and a 2-1 win) so they will feel that they have a good chance of over coming us. But on the performance we gave tonight in the 1st leg. We should of been beaten 3-1.