Looking at our defensive options, its clear we need to bring in a player or two. Our first choice back four is: Finnan -- Carra -- Agger -- Arbeloa Backups: Sami CB, Insua, Aurelio Riise LB Our back up right back and second back up for centre back is Arbeloa, and is involved in our first choice back 4. If Arbeloa has convinced Rafa that he's good enough to start left back for the whole season, I'd expect Rafa to buy a defender who could play right back as well as centre back (even though Heinze was a left and centre option).