wife Annie Kilner has filed for divorce months after it was confirmed that the star had fathered a second child with reality star Lauryn Goodman.
According to reports, the footballer, 34, was "stunned" to receive the papers a few weeks ago, despite being separated from Annie since and no longer on speaking terms.
A source told : "Kyle was stunned when he got the papers. He's spoken to Annie about them and they are discussing the next steps.
"This doesn't necessarily mean they will divorce. This is as much Annie flexing her muscles as it is anything else. She wants Kyle to know she's not messing about. But if this is a bluff, it may well backfire."
The defender was when Lauryn revealed the news in a text to Annie.
The message, sent by Lauryn on December 27 last year, read: "Hey it's Lauryn. I just wanted to quickly tell you that Kyle is the father of our daughter. He's been having a relationship with us all including the baby and I've got everything to prove it. He's been apart of our lives seeing the children."
Before welcoming daughter Kinara in August 2023, Lauryn gave birth to Walker's son Kairo in February 2020.
When Lauryn was pregnant with Kairo, Annie kicked him out and gave a tell-all to The Sun describing his actions as "obscene" and "her worst nightmare".
There were also reports that he had been unfaithful with reality star Laura Brown and spent a night with two escorts during the Covid lockdown.
Despite his infidelities, Annie took Kyle back and they got married in November 2021.
However, less than a year after tying the knot, he cheated with Lauryn once again when they met in London while he was waiting for groin surgery ahead of the 2022 World Cup.
When Lauryn revealed the truth in December, Annie was heavily pregnant with her fourth child. They share sons Roman, 11, Riaan, seven, Reign, five, and six-month-old Rezon.
The couple were childhood sweethearts, meeting as teenagers in Sheffield when she was 15 and he was 17.
Earlier this year, Lauryn took Kyle to court over money for her children, which concluded in a judge telling her she was
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