Jordan Pickford was spotted downing 'shot after shot' in the same bar as Lauryn Goodman and pals during a wild night out.
An onlooker said that the England goalkeeper, 30, who has two children with wife Megan Davison, was doing 'slammer after slammer'.
He bought drinks for his team-mates and reportedly Kyle Walker's ex Lauryn, 33, at the lavish Bagatelle in Mayfair, West London.
Kyle, 34, who plays for England alongside Jordan, shares four children with his wife Annie Kilner. He had an affair with Lauryn, and fathered a son, Kairo, four, and daughter, Kinara, 16-month with her.
An onlooker told The Sun: 'Jordan's missus Megan might not be best pleased to know Jordan was partying alongside Lauryn given her track record with Kyle.
'Megan knows Annie too from England games so it was amusing to see him buying shots for people at Bagatelle, including Lauryn.'
The group later moved on to Mistress of Mayfair, where Jordan continued to buy drinks for the group.
The onlooker added: 'Jordan was the life and the soul of the party and was splashing the cash, doing slammer after slammer.'
However, a second source said: 'Jordan had no idea the shots he bought were drunk by Lauryn. When the players realised she was there, they asked security to move her.'
MailOnline has contacted Jordan and Lauryn's representatives for comment.
It comes after Lauryn defended the father of her children Kyle in a series of Instagram stories on Thursday after he suffered vile racial abuse - but added she 'wishes he had the same compassion for his children'.
On Thursday afternoon, following a Champions League match against Juventus, Kyle took to Instagram to reveal the contents of a shocking message he received on the platform.
He added the caption: 'No one should ever be subject to the sort of vile, racist and threatening abuse I have received online since last night's match.
'@instagram and the authorities need to stop this happening for the sake of all who are suffering this abuse. It is never acceptable.
'To our fans, we will continue to work as a team to do better, to improve, and to turn the corner together.'
The City captain played the full 90 minutes in the defeat which leaves the former champions in 22nd and facing a battle to reach the next round.
Following Kyle's shocking post, Lauryn took to her Instagram stories to support the footballer and slam the 'vile racial abuse' as 'abhorrent'.
However, she added she 'wishes he had the same compassion for his two children he has abandoned after having a relationship with them'.
Lauryn wrote: 'I've just seen the vile racial abuse that my children's father has received. It's abhorrent and there is no place for racism in this world.
'It saddens me to see as I am raising our two biracial children without their heritage.'
In a second story, she added: 'Whilst my heart goes out to Kyle for the abuse he's been subjected to, I wish he had the same compassion for his two children he has abandoned after having a relationship with them.
'Especially with Kyle knowing just how much Kairo is being impacted it ceases to amaze me how the industry has swept this under the carpet because he can kick a ball 'well'.'
The mother later shared a message of support from a fan, which read: 'Exactly what I thought when I read about it. Yes the comments are awful but what about his children he has abandoned.'
Lauryn added: 'I'll leave this here for tonight but that's exactly my thoughts. It's an outrage'.
She went on to share a few more messages she had recieved from followers who were agreeing with her point of view.
MailOnline has contacted representatives for Kyle Walker for comment.
After Kyle's post, Manchester City issued a statement reading: 'Manchester City strongly condemns the racist abuse that Kyle Walker was subject to online following last night's fixture.
'We refuse to tolerate discrimination of any kind, regardless of whether that be in stadiums or online.
'We will be offering Kyle our full support following the disgusting treatment he has received.'
Lauryn's public show of defence comes after she shared her hopes to 'build bridges' with Kyle and 'do right by all the children' in a new interview on Tuesday.
The TV personality spoke candidly about her 'very tough' year after amid the paternity scandal and public scrutiny which followed.
Reflecting on the year, in an interview with Closer , Lauryn explained: 'I'm hopeful their dad will come back to them and continue to build his relationship with them. I hope for Kyle's sake it is sooner rather than later, because Kairo is starting to understand now.
'I always say that Daddy is busy playing football, but he's not believing my excuses anymore.'
'I hope we can all just move forward and do what's right by all the children. I have faith and hope that bridges will be built for the sake of Kairo and Kinara, because at the end of the day, we share two wonderful children together and life is just too short.'
Meanwhile, mother-of-four Annie instructed lawyers last month to begin legal proceedings as she prepares to fight for half of the Manchester City defender's £27million fortune.
Annie has said she 'just can't forgive him for what he's done to her'.
The couple separated last December after Kyle was revealed to have fathered his second child with Lauryn, who texted Annie to reveal the news.
MailOnline understands Kyle had moved back into their family home in Cheshire - but not into Annie's bed.
The footballer, who earns an estimated £175,000 a week, is said to have been sleeping separately from Annie in a room on the third floor of the house.
As their tumultuous relationship hit a new low, a source told MailOnline: 'Things are as bad between them as they have ever been. It wasn't like a normal marriage.
'They have barely been speaking to each other. She is divorcing Kyle because she just can't forgive him for what he's done to her. She can't get over it. She has tried.'
They added: 'Kyle seems to have accepted it's over. He's been happier in the last week or so. Like the weight of the world's been lifted from his shoulders.'
Childhood sweethearts Kyle and Annie met in Sheffield as teenagers but the footballer has been embroiled in a series of sex scandals over the years.
It comes as the ongoing war and paternity scandal shows no sign of stopping, with Lauryn continuing to speak about it on her podcast.
Last month, she reacted to accusations by fans commenting on Annie's social media that she ' brainwashes' the children she shares with Walker .
Speaking on her Yours Sincerely podcast, Lauryn revealed that a fan had told her that Annie had been 'liking' negative comments about Lauryn and her children - despite her also routinely liking many of her followers' comments.
She told co-host Lisa Andrews: 'I did get a message today saying that comments are being liked on her page about me apparently brainwashing my children. Can we touch on that?
'Come off it, what am I brainwashing my child about?'.
Turning to Lisa, she asked: 'Do I ever... You're here, and you're around me so much. I don't bring up his dad [Kyle] to him [Kairo], do I?
As Lisa confirmed that Lauryn 'never' mentions her ex in front of her son, the Celebs Go Dating star continued: ' We literally get on with our lives. We are a little family unit.
'It's just crazy to me that people think I'm just sat there trying to get him to rehearse stuff or whatever. What good would that do my child? I'm all about how my child is going to feel in the future.
'These are things his dad is going to have to deal with in the future because Kairo and Kinara will 100% want to ask him some questions.
'And unfortunately, I don't think the answers he'll give will be good enough because they'll be able to see through him and that's my personal opinion.'
A source told MailOnline at the time: 'Annie gets thousands of comments and likes of overwhelming support and she often goes through and likes some of them to show fans she appreciates their messages.
'But both Annie and Kyle would never want to bring children into what Lauren has made a public circus with her weekly podcast. Annie and Kyle are trying to get on with their lives and wish that Lauryn would do the same.'