With the Premier League returning in August, the top clubs spend the off-season preparing to challenge for the title.  

Most of the contenders have dipped into the transfer market already. In the biggest deal so far, Manchester United signed Romelu Lukaku from Everton for £75 million.  

Manchester City have also been busy. They've made Kyle Walker the most expensive Englishman ever, securing his services from rivals Tottenham for £50 million. 

Jurgen Klopp got some of his business done early, signing Mohamed Salah, while reigning champions Chelsea have been a bit slower. 

They've bought Tiemoue Bakayoko and Antonio Rudiger this summer, but a striker is expected to join them before the new season with Diego Costa likely to leave. 

And finally, there's Arsenal. 

In previous years, the Gunners have been disappointing, often buying the wrong player or just not buying at all.

But this summer has been different. They've already smashed their club record fee by signing Alexandre Lacazette for over £52 million and they're not done yet.  

Arsene Wenger is said to want another major signing, likely AS Monaco's Thomas Lemar, to help him challenge at the top this season.   

And Arsenal's sudden desire to compete in the transfer window may be down to what happened last term.   

The club had a poor campaign, finishing fifth in the Premier League and missing out on Champions League football for the first time in over 20 years.   

They did win the FA Cup in May, but most fans believe that it just wasn't enough.   

Speaking recently, Wenger has taken some of the responsibility for the disappointing season, suggesting that it was the state of his future that distracted his players.

He also said that this season will be different at the Emirates.

“For me it [this season] will be a change because [speculation over my future] was a bit eternal, a repetition of the press conferences about that," he told Arsenal Player, as per Goal.    

“Maybe I made a mistake and allowed that to happen because I didn’t commit early enough."

Wenger also didn't realise how much his indecision over his future would affect his players.

“I think at some stage I did not think it would be a handicap for my commitment and it was not.

"But it was a bit of a handicap because it created a climate of insecurity and a lack of clarity about my person that maybe did not help at some stage.” 

With his future now settled, the Frenchman will be hoping to lead his team back into the top four. However, he may have to do it without star man Alexis Sanchez.

The forward has been heavily linked with a move away from Arsenal this summer and because his contract expires in less than a year's time, they may be forced to sell him soon.