Swansea could take internal action against club director John van Zweden over remarks he reportedly made against Manchester United manager Louis van Gaal.
Van Zweden is alleged to have insulted Van Gaal following Swansea's 2-1 victory over United at the Liberty Stadium on Saturday, calling his fellow Dutchman an "arrogant bastard."
The remark was reportedly said to a Dutch TV crew that followed wealthy businessman Van Zweden to south Wales for Swansea's famous win ahead of a documentary that is due to be screened in the Netherlands this week.
Swansea chairman Huw Jenkins has now responded to the reports, describing Van Zweden's reported remarks as "disappointing" given the good working relationship the club has built up with Premier League rivals since winning promotion from the Championship in 2011.
"It is disappointing that one of our directors has apparently made a statement in the media in relation to a manager of another football club," Jenkins said.
"Our football club prides itself on having a good working relationship with all Premier League clubs, managers and staff.
"We feel we have built up that good relationship over a number of years and will continue to work hard to preserve our image within the Premier League and the game in general at all costs.
"If any of our directors behave in an inappropriate and unprofessional manner not befitting this football club then they will be dealt with internally and appropriately."
Swansea completed their first-ever league double over United by emulating their 2-1 win at Old Trafford on the opening day of the season with a comeback victory at the Liberty Stadium.
2-1 victory against @ManUtd for the Swans. Great weekend and thanks to @johnvanzweden and @SwansOfficial pic.twitter.com/03hRNZ8OT7
- Thom Koot (@TKT1990) February 23, 2015
And Van Zweden was quick to remind Van Gaal of the result on Twitter by posting a picture of himself indicating the score with his fingers.
Van Zweden also added the message: "Dear Louis. Sleep well mate 6 points and The double. @SwansOfficial @ManUtd 2-1 again!!! #easy."
He also posted a link to an article referring to comments he had made on Twitter when Van Gaal was appointed, when he wrote: "Van Gaal permanently to Manchester United. I think the wrong choice."
Always right !!! @swansnews @ManUtd #sportwitness http://t.co/ljKReE2vzF
- john van zweden (@johnvanzweden) February 22, 2015
In addition to posting the link, he wrote on Sunday: "Always right!!!"