West Ham's summer signings have made a huge impact this season, with Sam Allardyce's men currently sitting in sixth place as we come to the end of 2014.
The likes of Aaron Cresswell, Alex Song, Cheikhou Kouyate, Diafra Skaho and Enner Valencia have all improved a West Ham side which finished in 13th place last season.
However, the influence of Mauro Zarate has been somewhat more limited, with the former Argentine Under-20 international blowing hot and cold during his stay in East London so far.
The 27-year-old joined from Velez Sarsfield on a free transfer, but has flitted in and out of the side, starting just five games - but scoring twice in the process.
Hammers fans have been hoping that Zarate would play more often, particularly after an impressive cameo against Everton in November, but Allardyce has so far decided to stick with Stewart Downing and two of Andy Carroll, Sakho and Valencia.
A January exit has been mooted, with Malaga and Torino both linked - yet now, it seems he's going to be staying in London, with one of West Ham's Premier League rivals.
Zarate will join up with his new Chilean international team mates Eduardo Vargas and Mauricio Isla, though Vargas has recently sparked a minor divide between himself and Zarate after making comments about how he shouldn't be playing for Chile.
Rangers boss Harry Redknapp has to hope that the two can put their differences behind them in a bid to help QPR stay in the Premier League, with a move looking likely.