The transfer window has officially closed until January and a lot of big transfers were made. But we will take a look at those which are a cut above the rest in terms of quality, price and performance.

Christian Eriksen (Ajax to Tottenham Hotspur, £11m)

One of Europe's hottest prospects had a year left on his contract with Ajax and a lot of clubs were after him. In the start of season 2013/14, Eriksen showed what he is capable of with scoring three goals and providing four assists in only six games.

This was enough for Tottenham to match Ajax's price tag and Spurs signed the Dane on the cheap. Eriksen will face competition from Lewis Holtby and Gylfi Sigurdsson for a starting place in Andre Villas-Boas' team, but if he keeps this form he should earn a place in the starting XI.

Henrikh Mkhitaryan (Shakhtar Donetsk to Borussia Dortmund, £24m)

The Armenian impressed during his spell in Ukraine, especially in season 2012/13 in which he scored 29 goals in 42 games. This earned him a transfer to Borussia, who where looking for a replacement for Mario Götze, who joined rivals Bayern Munich.

Dortmund's fans gave the nickname "Micki" to the Armenian. Micki missed the first game because of an injury, but in the next three games he scored two goals. If he continues to score after the international break, he could be one of Borussia's stars this season.

Pierre-Emerick Aubameyang (Saint-Etienne to Borussia Dortmund, £11m)

Another player from Dortmund's new faces. Aubameyang's pace and shooting will add another dimension to Borussia's attack. The Gabon international scored a hat-trick in his debut for Dortmund against Augsburg. Pierre will have to work hard to win a place in the starting XI with the likes of Marco Reus, Robert Lewandowski and Jakub Błaszczykowski all playing very well.

Mesut Özil (Real Madrid to Arsenal, £42m)

One of the most surprising transfers in the summer. After Gareth Bale signed for Los Merengues, Florentino Perez decided Özil was surplus to the requirements and was sold to Arsenal.

Fans and players of Real showed their surprise and dissatisfaction with Özil leaving the club. Cristiano Ronaldo said about the move: "He was the player who best knew my moves in front of goal... I'm angry about Özil leaving."

Throughout Bale's presentation, fans constantly chanted "Özil is not for sale", but this did not help and Arsenal bought one of the best attacking midfielders in the world. He will probably make his debut against Sunderland on September 14.

We will see what impact he will make in England and if he adapts quickly to the Premier League he will be a sensation for Arsenal.

Isco (Malaga to Real Madrid, £26m)

The boy, who said a few years ago he will always be an 'Antimadridista', has joined Real Madrid. It really looks like money can buy everything.

Anyway, Isco left the dislikes and shined for Los Merengues very fast. In his first three games, the Spaniard scored three goals and provided one assist. Because of him, Kaka and Özil were sold to Milan and Arsenal, respectively.

In a few years time Isco could be seen as a bargain buy.

Fernando Llorente ( Athletic Bilbao to Juventus, free transfer)

Arguably this is the transfer of the season. Last January Juventus made a pre-contract agreement with Llorente and on July 1 he joined the Bianconeri on a free transfer.

Juventus could have easily paid £30m or even more for the prolific striker, but they waited for a few months and made a fantastic deal.

He hasn't played a lot last season, because of arguments between him and manager Marcelo Bielsa, but he showed that he is still a world-class striker in pre-season.

As soon as he adapts to Italian football, Llorente will be the deadly striker who single-handedly beat Manchester United twice.

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