Premier League: Bargain XI 

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Dele Alli and Philippe Coutinho were procured for unbelievably low transfer fees

Defence

Right-back: Joe Gomez (Liverpool)

Liverpool v Manchester United - Premier League
Gomez kept the in-form Rashford and Martial in his pocket during the intense clash at Anfield

Joe Gomez had a very shaky debut season at Anfield, but he's matured a lot under Jurgen Klopp.

The Reds paid just £3.5 million to sign him from Charlton Athletic in 2015. After being sidelined for a long time with an injury, he's become the first choice right-back whenever Liverpool play with a four-man defence. His adaptability also allows him to play at centre-back if needed.

Premier League teams signing Championship players don't always work out, but it has turned out just fine for Gomez so far.

Centre-back: Cesar Azpilicueta (Chelsea)

Chelsea v Newcastle United - Premier League
Azpilicueta - silent but omnipresent

The Spanish utility man has got to be one of the most underrated players in the Premier League.

The £7 million that Chelsea paid Marseille for him back in 2012 seems to be dirt cheap now. A strong, physical, quick defender who can play anywhere across a back four, he was predominantly used as left-back under Jose Mourinho.

He even managed to keep Filipe Luis out of the first team, with the Brazilian signing for the Londoners on the back of a very impressive personal season with Atletico Madrid.

Under Conte, however, he's adapted extremely well as a ball playing centre back in a 3-4-3 or 3-5-2 formation, and is a vital cog in the Italian's rock-solid defensive system.

Centre-back: Eric Dier (Tottenham Hotspur)

Tottenham Hotspur v Burnley - Premier League
Dier has emerged as a leader for Spurs on the pitch

Dier was another player who endured a very shaky start to life in the Premier League, before eventually becoming a regular starter for both Spurs and England.

Dier's versatility is perhaps the single biggest factor that enables Tottenham to seamlessly shift from a 4-3-3 system to 5 at the back when transitioning from attack to defence.

Even though he is primarily a midfielder, Dier's unique set of characteristics allows him to function as the prototype of the modern-day ball-playing centre-back. Absolute value for money, considering he cost Tottenham a paltry £4 million.

Left-back: Sead Kolasinac (Arsenal)

Arsenal v Huddersfield Town - Premier League
Kolasinac already has 4 assists and a goal for Arsenal this season

Probably not the most eye-catching signing of the summer, but in terms of value for money, the Bosnian is up there with the likes of Mohamed Salah, Alvaro Morata and Romelu Lukaku.

After spending six seasons with Schalke, Kolasinac chose to run down his contract and signed a deal with Arsenal for free, making him the Gunners' first summer signing of 2017.

His omission from the starting lineup in Arsenal's humiliating 4-0 defeat to Liverpool drew a lot of criticism from the fans, and he's been a regular first-team player since them.

His incredible physique is unusual for a fullback, and it allows him to dominate opposition attackers in a way very few left backs can. He has all the makings of a world-class defender, and he's still only 24.

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