It had been expected the Sardinian would leave during the summer after becoming frustrated at the lack of first team football. He has been a huge hit with the fans since signing from Inter Milan in 1997.
However it now looks like he could be on his way to Harry Redknapps Pompey. A Boro spokesman confirmed, "We are aware of Portsmouth's interest, though nothing has been agreed at this stage."
Meanwhile, Boro Reserves last night drew 2-2 away to Newcastles second string, with forgotten man Joseph Job scoring both the goals.