Thierry Witsel admits several European heavyweights are tracking his son ahead of the summer market.
"I am aware of the interests of Fiorentina by reading the newspapers, but for me I have not been contacted by anyone. Direct contact between the clubs? Honestly I cannot say," said Witsel Snr.
"There are many scouts in Liege every time he plays for Standard, but I cannot tell you exactly which clubs they are and they may not necessarily be there to see only Axel."