Which team has signed the best striker - Chelsea, Arsenal or Manchester United?

The 2017-18 Premier League season is yet to kick off, but the debate is already raging over who has done the best business in this summer's transfer window.

Arsenal, Chelsea and Manchester United have all spent serious money reinforcing their front lines, with Alexandre Lacazette (£52million), Alvaro Morata (£58m) and Romelu Lukaku (£75m) expected to hit the ground running in the new campaign.

But while Antonio Conte insists Morata needs time to adjust to English football and the Pemier League champions' tactics, there will be nowhere to hide if he fails to impress Chelsea fans from the off.

So, which of the trio is the best summer bargain? Bookmakers bwin have compiled statistics on what makes the perfect striker - and it shows that money rules when it comes to goals.

Strikers purchased for over £20m average a goal every other game with a strike rate of 0.51. Conversely, it may be worth clubs keeping their money if a forward is available for under £10m - they have almost an identical strike rate (0.34) to those signed for free.

United, Chelsea and Arsenal have nothing to worry about in that regard as Lukaku, Morata and Lacazette all cost north of the £50m mark, though all three are in a difficult age range.

The tio are all between 24 and 26 - too old to be forgiven for easy mistakes, and too young to be considered in their prime - while older players provide better value for money. Those who are at least 29 cost £0.36m per goal, compared to £1.42m per goal for players under 23.

Conte's pleas for Morata to be given time are borne in the statistics as well - 27 per cent of strikers signed by English clubs from their Premier League rivals score a goal every other game, whereas forwards coming from overseas hit those totals just 17 per cent of the time.

However, Spanish strikers are second only to Italian strikers for value per goal - £665,000 a strike to £652k, with French forwards at £971k - while Belgian strikers offer the worst value per goal in the Premier League for £3.37m an effort.

Lukaku may seem a safer bet than Morata or Lacazette considering he hit 25 Premier League goals last season for Everton - only beaten by Harry Kane's 29 for Tottenham.

But the Belgian will have to record a healthy goal return to provide value, especially with a heftier price tag than either Lacazette or Morata.

So, who will be the best buy? Vote in our poll below...