The former Ajax midfielder could potentially depart the Camp Nou in next summer's transfer window as the club look to raise funds ahead of potential new arrivals.
Arriving in the summer of 2019 for £65million from Ajax, Barca had high hopes for the 24-year-old who shone for his club in the Champions League that year.
Unfortunately for de Jong, he has been unable to progress since leaving Holland for Spain and could now leave the club.
According to his father, John de Jong, up to five clubs are interested in his services but two of those who may not be able to sign him are Man United and Bayern Munich.
"It's often bad weather there,' he said to dutch publication AD. "Of course it's about football, but it does matter.
"Of course I know that Barcelona needs money and a great offer for Frenkie could help, but I don't see it happening anytime soon.
"Although, five top European clubs have all called.
"They (De Jong and his partner Mikky Kiemeney) are having such a great time in Barcelona.
"Life is great there. I'm there often. Even now you are in the sun with 16 degrees."
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