The three worst Premier League summer signings so far, including West Ham flop

Sunderland's Papy Djilobodji in action with Middlesbrough's George Friend

The Premier League is six games old and some summer spending is starting to look regrettable.

The transfer window is always a lottery. You can do great business for a modest fee and get a bargain, or you can spend the bulk of your war chest on players that don't live up to expectations.

Liverpool's Sadio Mane celebrates after scoring their first goal

Some signings have paid off, like Sadio Mane at Liverpool and Yannick Bolasie. However, some are in the latter category. Here are three of them.

Papy Djilobodji

Chelsea signed Nantes defender Djilobodji last summer for a fee of £2.75 million. In his Chelsea career, he made one substitute appearance in the League Cup against Walsall, coming on in injury time.

Sunderland's Papy Djilobodji in action with Middlesbrough's Antonio Barragan

So when David Moyes paid £8 million for the Senegalese international, many eyebrows were raised, with some saying Chelsea made the deal of the century.

Djilobodji's lack of experience in the English game has come to a head so far with him looking very shaky and error prone at the back. He certainly has physical attributes but he must cut out the mistakes to ensure he helps Sunderland stay up and keeps his place ahead of the much more experienced John O'Shea.

Jonathan Calleri

The one saving grace for West Ham is that the deal for the Argentinian striker is only a loan one. So far in his fleeting Olympic Stadium career, Calleri has yet to look the business.

He has missed plenty of opportunities and may find himself in and out of the squad due to the Hammers' not identifying who their strongest centre forward option is.

West Ham United's Jonathan Calleri shoots wide

Calleri will hope to make an impact at West Ham in order to earn a permanent move, and definitely before Andy Carroll is fit.

Michy Batshuayi

This one may seem harsh, given his lack of starting opportunities, but Batshuayi is so far looking like a poor acquisition at £33 million.

Chelsea's Michy Batshuayi reacts after a disallowed goal

Given Antonio Conte's reputation for play a 3-5-2 formation, it may be telling that he hasn't decided to give the opportunity for Batshuayi to play alongside Diego Costa. Instead he has opted for a more traditional one up front with the Belgian being limited to just substitute appearances.

He has grabbed a couple of goals in the EFL Cup against Bristol Rovers but it may take Diego Costa to pick up an injury or suspension before he can make an impact.

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