The 27-year-old has become a key player at United, since joining the club from Spartak Moscow in January 2006.
“Vidic would be delighted to play at Barca as his dream is to go to the Spanish league,” Paolo Fabbri told RAC1.
“We have to analyse the situation but, being realistic, things are complicated at the moment.
“The team just lost Cristiano Ronaldo and [Carlos] Tevez and they do not want to lose another important piece of their starting XI once again.”