Chelsea's summer business has been efficient, if not as spectacular as some of their Premier League rivals.

The arrivals of N'golo Kante and Michy Batshuayi saw two of the biggest investments in world football this summer, as Antonio Conte looks to put his mark on a squad that flopped so appallingly during the 2015-16 season under the stewardship of Jose Mourinho.

The summer nonsense rumour mill has been in full flow over the last month or so and it has churned out some of the classics. You all know that rumour that just won't go away, aside from the fact that no reputable source has ever even hinted that it will be close to going through, yeah? Well, that sort of thing has continued as ever.

Chelsea, however, have been rather shrewd this summer and sound like they may be chasing their former forward, Romelu Lukaku to add to their striking fire power.

Going back isn't always great. Here are FIVE reasons Lukaku would be a less than perfect signing for Chelsea...

Never go back...

Romelu Lukaku (Chelsea)

Taking a step back to go forwards can be a positive thing. However, this is a little different. The return of Romelu Lukaku would unlikely be like the second coming of a deity, as it was when Didier Drogba returned.

Fans will be quick to criticise a player who left on less than perfect terms, whilst Lukaku is a player who has never remained anywhere long before flirting with the thought of another transfer.

It would be a challenge for either party to really buy in to something that went so wrong previously.

Worrying Stagnation...

lukaku3

Lukaku, despite continuing to score freely, has seemingly stagnated since bursting on to the scene with his excellent campaign at West Brom a few years back.

Although his performances have largely been impressive, his overall improvement as a footballer is questionable. The potential is still there to become a truly world class striker, of course, but there must be a modicum of concern that he doesn't seem to have addressed the fundamental weaknesses in his game.

'Ow Much?!

Romelu Lukaku

The price.

Now, for the sort of figures that are being mentioned you could sign a player with far more experience and, hopefully, with a more complete, rounded game. Whether that be a star at his peak, or someone who has featured regularly in the Champions League, the cost of Lukaku would break records.

Breaking records for a player yet to really show he can develop his game would be a worry for Chelsea.

Limitations

Romelu Lukaku

At his best, Lukaku is a destroyer. A man mountain capable of flattening every centre-back in sight and finishing from the most daring positions.

His game on the counter, particularly, is breath-taking and is a fair handful to defend. Unfortunately for Chelsea, Lukaku's game is less cultured than they may really desire. His ability to link-up attacking movements is limited and, ultimately, falls far short of the level that many a side of their calibre would want.

Oh, Diego

Diego Costa

Even if it is going to be 4-4-2 under Conte, it would be a damn challenge to keep Diego Costa, Michy Batshuayi and Romelu Lukaku happy.

The depth of the striking options would be dreamy, of course, but it's almost impossible to keep three strikers happy, considering the amount of minutes they would be expecting.