Kjaer open to Old Trafford transfer
The 20-year-old centre-back has made 34 Serie A appearances for the Rosanero since arriving from FC Midtjylland a year ago, netting three times.
Sir Alex Ferguson is believed to be an admirer of the Danish international, who has four caps for his country, with the Red Devils' arch rivals Liverpool and Real Madrid also linked with moves for the starlet in te past.
And despite Kjaer being a self-confessed follower of Rafael Benitez's side, he has insisted that he would not think twice about joining United should the opportunity present itself.
"If United just had two defenders whilst Liverpool had three, I would choose United without hesitation," he told Tipsbladet.
"It does not help to choose with the heart in that kind of situation. I am a professional."