The Sun reports that the cage fighter, 37, is desperately seeking half of their £500,000 earnings as a couple – around £250,000.
But his glamour model ex-missus, 32, has made him a measly offer of £50,000 – around 10% – on the advice of her lawyers.
The settlement is also dependent on him signing a gagging order, preventing him talking about Katie or their life together.
According to reports, Alex is still refusing to leave the couple’s Surrey mansion unless she makes him an offer he is happy with.
A source told The Sun: “He’s put money in to it over the past year and has got the gym and games room exactly as he wants them. He feels like it’s rightfully his.
“He’s doing little things he knows will frustrate Katie, like eating her food out of the fridge.
“He’s even started to move pictures around the house, which everyone thinks is just really creepy.”
In a bizarre twist, Alex reportedly joined in with a druid ritual at Stonehenge yesterday along with some of his cage fighter mates, hoping to clear his mind.
A pal said: “Alex was down in the dumps but feels much stronger now.”