They're busy preparing for their comeback tour as a four-piece later this year.

But The Spice Girls have reportedly turned down an '£80 million offer to tour America' over fears it may cause 'tension' between the bandmates.

A source told The Sun that Mel B, Geri Horner, Mel C and Emma Bunton could have banked millions from a tour of top US stadiums but decided against that and producing new music together.

Prioritising: The Spice Girls have reportedly turned down an '£80 million offer to tour America' over fears it may cause 'tension' between the bandmates (pictured November 2018)

They added: 'The UK shows will be massive and very special so they are apprehensive about doing more in the US because they know from experience how long stints together on the road can cause tensions.

'They all have families who they need to consider, they aren’t single women who can drop everything and go.

'And in terms of new music as a group, they are all in various stages of relaunching their solo careers, which makes it very unlikely.'

The news comes as earlier Mail Online reported that the group was 'updating' some of their songs so that the reunion tour 'doesn't offend anyone'.

Decision: A source told The Sun that Mel B, Geri Horner, Emma Bunton and Mel C (L-R) could have banked millions from a tour of top US stadiums but decided against that and producing new music together (pictured 2012)

Tough times: They added: 'The UK shows will be massive and very special so they are apprehensive about doing more in the US because they know from experience how long stints together on the road can cause tensions' (Pictured 1997)

Notably, the line 'Yellow man in Timbuktu/Colour for both me and you' from their sixth single Spice Up Your Life is potentially on the chopping block, with worries that it is now considered racist.

It's also been alleged they will change the words to Last Time Lover - an album track from their 1996 debut record Spice.

It's unclear why these would be altered; the riskier lines in song allude to female empowerment, which was always the band's ethos [Girl Power].

Lines include 'I found my pride not easy/Slowed it down I said stop...Words of love they don't wash with me/What's the hot rush no urgency you see' which suggest female control.

Responsibility: They continued: 'They all have families who they need to consider, they aren’t single women who can drop everything and go'

Reports suggest the #MeToo movement have caused these concerns, yet Last Time Lover, if anything, supports the message of #MeToo.

The group altered the lines of their third single back in 1996 - 2 Become 1.

The line on the album version sang 'Any deal that we endeavour/Boys and girls feel good together' and was voiced by Geri.

For the single version - which went on to be the first of the band's Christmas number one tracks - Victoria took the vocals, and they were changed to 'Once again if we endevour/Love will bring us back together'.