West Ham United backed manager Sam Allardyce in the transfer market this summer, with Carl Jenkinson, Aaron Cresswell, Cheikhou Kouyate, Morgan Amalfitano, Diego Poyet, Enner Valencia, Mauro Zarate and Diafra Sakho all arriving as the Hammers aim for a top 10 finish in the Premier League this season.
And arguably their most ambitious signing - outside of Valencia - was Alex Song. The Cameroon international made his name during a superb spell with Arsenal, before making a move to Barcelona in 2012. Having been unable to dislodge Sergio Busquets in the holding midfield role at the Camp Nou, Song was the very definition of an outcast under Gerardo Martino and eventually Luis Enrique as the Catalan giants simply looked to get rid.
A return to Arsenal was mooted in the press but never materialised, leaving West Ham to land something of a coup when Song joined on a season-long loan just days before the transfer deadline.
With the international break taking centre stage over the last fortnight, Song was only a substitute against Hull on Monday before making his full debut against Liverpool on Saturday - and he enjoyed a fruitful first home game in the claret and blue of West Ham.
As West Ham saw off Liverpool in a 3-1 win, Song was instrumental in midfield, making more tackles than any other West Ham player and also had a higher pass completion % than any of his team mates.
Song proved that he still has what it takes to be an effective defensive midfielder in the Premier League, and Arsenal may well be ruing that they didn't make a move to sign their former star. He did leave North London somewhat acrimoniously as he became the latest Arsenal player to head to the Camp Nou after Thierry Henry, Aliaksander Hleb and Cesc Fabregas, but Wenger should surely have been able to put that on the backburner for the sake of his team.
Arsenal have struggled in midfield already this season, with Mathieu Flamini and Mikel Arteta uncomfortable as a lone holding midfielder. Neither have the athleticism to cope with marking players who drop into pockets of space such as Sergio Aguero, and that's where Song could have played given the job he did on Liverpool's midfield on Saturday evening.