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Chelsea winger Victor Moses has signed a new four-year contract and joined Premier League rivals West Ham on loan for the rest of the 2015/16 season, it was confirmed on transfer deadline day.

The Nigerian international has failed to establish himself as a first-team regular at Stamford Bridge since a £9m ($13.8m) switch from Wigan three summers ago, making just 44 appearances in all competitions. The move across London will be his third loan spell in the last three seasons following on from an unsuccessful stint at Liverpool and a far more productive spell with Stoke City.

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"West Ham United are delighted to announce that Chelsea winger Victor Moses has signed for the Club on a season-long loan," the Hammers confirmed in an official statement on 1 September, with Moses potentially set to make his debut when West Ham host Newcastle after the international break.

"Moses, 24, makes the move across London to link up with the Hammers on Tuesday's transfer deadline. The 5'10 creator has spent the last two seasons on loan at Liverpool and Stoke City and is delighted to have made the switch to the Boleyn Ground."

West Ham have been extremely active in the transfer market as the clock ticks down to the deadline, re-signing former Arsenal midfielder Alex Song on another loan from Barcelona and also announcing the arrival of striker Nikica Jelavic from Hull City. Michail Antonio of Nottingham Forest is also expected to join, while Sky Sports suggest that Slaven Bilic could be preparing a late swoop for Tottenham outcast Emmanuel Adebayor.

As for Moses, his decision to follow the likes of fellow loanee Nathan Ake and pen new terms at Chelsea - confirmed here - will be seen as a curious one given that he is unlikely to feature prominently in Jose Mourinho's first-team plans anytime soon. Aside from his substitute appearance in the Community Shield defeat to Arsenal last month, he has not made a competitive appearance for his parent club since May 2013.