By Alessandro Schiavone in Prague Slavia Praha 2-4 Barcelona Ferociously convinced he could hold his own at Barcelona, Fermin Lopez snubbed Chelsea in the summer. And how that wise decision is proving prophetic as Lopez spearheaded Hansi Flick's Barcelona machine to a 4-2 win over Slavia Prague yesterday night. Operating as a modern no.10 just off Robert Lewandowski in the Catalans' 4-2-3-1 system, Lopez was a really thorn in the Czech giants' side. The kind of thorn Cole Pa