[TRANSFER WATCH] The 2010 Torneo Apertura, the first half of the Mexican First Division season, kicks off this weekend. The offseason has again seen a lot of movement on the transfer front. Several foreign stars have returned to Mexico, while several young national team standouts have moved to Britain. For a look at the key moves ...

RICARDO OSORIO. The Mexican national team defender, best remembered for his turnover that led to Argentina's second goal in its 3-1 win over the Tri in the round of 16 at the World Cup, has left German club VfB Stuttgart after four seasons and joined Monterrey.

HUMBERTO SUAZO. After helping Monterrey win the 2009 Apertura, the Chilean World Cup striker left in January for Spanish club Real Zaragoza, which had an option to buy him for $13 million, but he's back with the Rayados.

ENRIQUE VERA. Mexico has often been a stepping off point for Paraguayans, but Vera, who scored for the Albirroja in its win over Slovakia at the World Cup, is returning to Mexico for his second stint, this time with Atlas, after helping Ecuador's Liga de Quito win two South American club titles.

OSCAR PEREZ. The surprise pick to start in goal for Mexico at the World Cup ahead of starlet Guillermo Ochoa has joined promoted Necaxa from Cruz Azul, where he no longer figured in its plans.

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JAVIER HERNANDEZ. Timed as the fastest player at the World Cup, "Chicharito" ("Little Pea") parlayed a breakout season at Guadalajara into a transfer to Manchester United. United manager Alex Ferguson loves Hernandez: “He’s got lots of good qualities: he’s two-footed, very quick and has a good spring, and he’s a natural goalscorer. We’re very excited about him and hope he has a great career at Old Trafford.”

PABLO BARRERA. West Ham United spotted the 23-year-old winger at the World Cup, where he played three matches for Mexico, and signed him from UNAM in a $6 million transfer deal. He's the second Mexican international to play for the Hammers. They released Guillermo Franco following the end of last season.

EFRAIN JUAREZ. Juarez was part of the Mexican team that won the 2005 Under-17 World Cup and became an integral part of the senior team in the last year, first playing as an outside back and then in midfield at the 2010 World Cup. The 22-year-old Juarez's versatility makes him a valuable pickup for Celtic, which acquired him from UNAM.

CRISTIAN RIVEROS. Another one of the Mexican-based Paraguayan stars, Riveros had wrapped up his move from Cruz Azul to England's Sunderland before the World Cup.