With the January transfer window wide open, GiveMeFootball sensed an opportunity to look back at the best signings ever made in the controversial period since it's inception.

From Emmanuel Adebayor to Matthew Etherington, teams have enjoyed either instant impact from a player or more long-term benefits from a value purchase.

In part one; we run through the first ten teams in the Barclays Premier League (alphabetical), and make our choice for their best signing in the first month of the year. Do you agree with our choices...

Arsenal

Emmanuel Adebayor (£7 million, Monaco)

Sure to be a controversial choice, Adebayor arrived at the Emirates Stadium in 2006 and struggled to make an impact initially following his arrival.

However, the Togolese international scored 62 goals in 143 appearances in all competitions, and was sold three-and-a-half years later for a huge profit at £25 million.
 

Aston Villa

Darren Bent (£24 million, Sunderland)

The most expensive purchase amongst all clubs in our list, Bent's goalscoring record makes him a simple choice for GMF.

After scoring nine goals in 16 games in at the end of last season, he is again in good form this term (six in 17), although injury has hampered his impact slightly for Alex McLeish's men.
 

Blackburn Rovers

Chris Samba (£450K, Hertha Berlin)

In what is surely one of the bargains of the Premier League era, Blackburn snapped up the towering defender for a minimal £450,000 in 2007.

The 27-year-old has gone on to become club captain at Ewood Park, been key to keeping the club in the top flight in recent seasons and remains an integral part of the club under Steve Kean.
 

Bolton Wanderers

Gary Cahill (£5 million, Aston Villa)

The England international centre back arrived at the Reebok Stadium in 2008 with little to show from his four years with Aston Villa, apart from two spells on loan.

However, the 26-year-old has matured into one of the country's best defenders over the past four years at the Reebok Stadium, and if sold to Chelsea in the coming days will hand the club a small profit on their purchase.
 

Chelsea

Branislav Ivanovic (£9 million, Lokomotiv Moscow)

Given the finances and big-names at Stamford Bridge, Ivanovic doesn't immediately jump from the page as the club's best signing in January.

However, the Serb has proved himself both domestically and in Europe, and has featured on a more-and-more regular basis in recent seasons after proving himself behind John Terry as one of the club's best defenders.
 

Everton

Mikel Arteta (loan, Real Sociedad)

Given the financial constraints at Goodison Park, it's unsurprising that their best move in January, in the eyes of GMF at least, was a loan switch.

Arteta joined from Real Sociedad in 2005, and was an instant hit for the Toffees with his style of play and ability to create goals for his teammates. Signed for £2 million in the same year, he was sold on deadline day in August 2011 for a reported £10 million.
 

Fulham

Brede Hangeland (Undisclosed, Copenhagen)

The Norwegian defender was heavily linked with some of Europe's best in the summer of 2007, but after sticking in Denmark he was lured to Craven Cottage by Roy Hodgson.

An instant hit with the Fulham faithful, Hangeland has worn the armband on occasion and is the stand-out performer in Martin Jol's side.
 

Liverpool

Martin Skrtel (£6.5 million, Zenit St. Petersburg)

Plenty of options to choose from at Anfield, but the Slovakian's stunning form makes him our choice as the club's top signing in January.

Luis Suarez could take over the position in years to come, whilst Daniel Agger was also a fine buy in 2006. But, the fact the Reds' current defensive record owes so much to Skrtel means he's our man.
 

Manchester City

Nigel de Jong (£16 million, Hamburg)

Another surprise on the list, but Manchester City's best business has predominantly been done in the summer, with few players arriving mid-season to make a telling impact at Eastlands - now the Etihad.

De Jong's arrival was one of the first big-money moves made in the Sheikh era, and whilst he's been fairly absent this term, his role for the side in the last two seasons and a half can't be under-estimated. Expect the Dutch international to return to his best.
 

Manchester United

Nemanja Vidic (£7 million, Spartak Moscow)

When Sir Alex Ferguson signed the Serbian centre back in 2006, few could have predicted the impact he would have at Old Trafford over the next six years.

His formidable partnership with Rio Ferdinand was the basis for four Premier League titles and a Champions League trophy, and the club's current troubles unsurprisingly coincide with his absence.

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