LIV said that Koepka's departure had been "amicably and mutually agreed"

Saudi Arabia-backed LIV Golf drove a wedge through the world of golf, spending billions of pounds to entice some of the sport's biggest names to its global series.

But as the team-based breakaway competition prepares for the start of its fifth season in the first week of February in Riyadh, uncertainty surrounds its future.

In December five-time major champion Brooks Koepka became LIV's first star player to return to the traditional PGA Tour. Days later, fellow American Patrick Reed said he would consider following suit if he was offered the same terms.

So will other big names quit the breakaway competition? What forces are at play? And how - and will - LIV respond?