The Federacion Mexicana de Futbol (FMF) has released Under-22 manager Raul Gutierrez's roster for next month's CONCACAF Olympic Qualification tournament and look to make sure the gold-medal holder is back at the Olympics.

El Tri won the gold medal in London in 2012 but still must qualify in CONCACAF to defend that prize. Mexico is in Group B along with Costa Rica, Honduras and Haiti. The top two teams fro the group advance to the semifinals with a win in that round clinching Olympic qualification. The team finishing third faces a playoff with a South American team for a berth.

With the first portion of the tournament not falling on international dates, some Mexican clubs, notably Chivas, appear to have declined to release some players including forward Carlos Fierro and midfielders Jose David Ramirez, Michael Perez and Carlos Cisneros. Queretaro's 19-year-old star Orbelin Pineda and Tigres' Jorge Espericueta are other notable absences from the list.

The players will have a mini-camp starting Sunday before returning to their clubs 

Full roster:

Goalkeepers: Gibran Lajud (Tijuana), Luis Cardenas (Monterrey), Raul Gudino (Porto)

Defenders: Josecarlos Van Rankin (Pumas), Hedgardo Marin (Chivas), Carlos Salcedo (Chivas), Rodolfo Pizarro (Pachuca), Víctor Guzman (Pachuca), Luis Lopez (Monterrey), Jordan Silva (Toluca)

Midfielders: Erick Gutierrez (Pachuca), Alfonso Gonzalez (Atlas), Raul Lopez (Chivas), Luis Lorona (Chiapas), Erick Tafolla Aguirre (Morelia)

Forwards: Erick "Cubo" Torres (Houston Dynamo), Marco Bueno (Leon), Daniel Alvarez (Atlas), Hirving Lozano (Pachuca), Alfonso Tamay (Puebla)