Arsenal's surprise January transfer that could backfire and provide new twist in top-four race

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Arsenal got a lot of business done during the January transfer window. Of the six first-team players to depart either permanently or on loan, by all accounts, Calum Chambers' move to Aston Villa took many by surprise.

Four days before the transfer window closed, it was announced that after seven-and-a-half years, the versatile defender's time at the Emirates Stadium had come to an end with him joining Steven Gerrard's side for an undisclosed fee.

"Calum Chambers has joined Aston Villa in a permanent transfer for an undisclosed fee," a statement read on Arsenal 's official website. "Joining us from Southampton in July 2014 as a 19-year-old, Calum soon became a full England international, having previously starred for the Under-21s.

"The defender made 122 appearances in all competitions during his time with us, winning both the FA Community Shield on his debut in August 2014 and the Emirates FA Cup in 2015. We wish Calum all the best for the next chapter in his career and thank him for his contribution to Arsenal over the past eight seasons."

Whilst Chambers barely featured for Arsenal during the first half of the season, he did provide cover at right-back as well as in central midfield which made the