Here's the official preseason roster for Chivas USA. You won't see any players from Guadalajara on there, but I'll try and find out if any are expected at any time during the preseason. I'd expect to see at least one face from Guadalajara here as a return for having plucked the starting left midfielder from Chivas USA's ranks.
Goalkeepers: Dan Kennedy, Lance Parker, Zach Thornton, Doug Warren
Defenders: Nelson Akwari, Jonathan Bornstein, Bobby Burling, Jim Curtin, Dan Gargan, Ante Jazic, Claudio Suarez, Shavar Thomas, Lawson Vaughn
Midfielders: Jamie Franks, Sacha Kljestan, Michael Lahoud, Jesse Marsch, Gerson Mayen, Tony McManus, Paulo Nagamura, Carey Talley, Raphael Wicky
Forwards: Reinier Alcantara, Justin Braun, Kyle Christensen, Alecko Eskandarian, Jorge Flores, Maykel Galindo, Atiba Harris, Nick Perera, Ante Razov