Squads:

ARGENTINA:
 Mariano Andújar, Diego Pozo, Cristian Álvarez, Martín Demichelis, Nicolás Otamendi, Emiliano Papa, Nicolas Pareja, Pablo Aimar, Éver Banega, Mario Bolatti, Jesús Dátolo, Ángel Di María, Fernando Gago, Javier Pastore, Gonzalo Higuaín, Ezequiel Lavezzi, Lionel Messi, Martín Palermo, Eduardo Salvio

CATALUNYA
 Víctor Valdés, Jordi Codina, Bruno Saltor, Joan Capdevila, Gerard Piqué, Carles Puyol, Alberto Lopo, Fernando Navarro, Oleguer Presas, Sergio González, Sergio Busquets, Joan Verdú, Moisés Hurtado, Xavi Hernández, Cesc Fàbregas, Gabri García, Óscar Serrano, Bojan Krkić, Sergio García, Ferran Corominas

First of all, both NT played more unders then overs. Catalunya four out of last five games ended with under:

28-12-2005 Catalunya - Paraguai          1-1       - Camp Nou (Barcelona)

24-05-2006 Catalunya - Costa Rica       2-0       - Estadi Olímpic (Terrassa)

08-10-2006 Catalunya - Euskadi           2-2       - Camp Nou (Barcelona)

29-12-2007 Euskadi - Catalunya           1-1       - San Mamés (Bilbao)

24-05-2008 Catalunya - Argentina         0-1       - Camp Nou (Barcelona)

As You probably know, Argentina last games also ended with under. They won 0:1 against Uruquay in most important game for qualiffication in WC in South Africa. I expect Higuain to play in attack as only forward, while Messi will support him from the back. I am sure Maradona wont like to loose the game, as well as Cruyff. For Catalunya it is question who will lead the attack, but I don't see something special at that position. Yes, Catalunya have excellent defense line, excellent midfield, but attack isn't at that level. So, I am also sure Johan Cruyff wont start too open. He is new couch of Catalunya, he has a good job without presure like other couches, he is well payed. Because of that he will like to show some results. A good result here means a lot for Cruyff. In such situation I think Under is a logical choice.