Manchester United are watching Napoli defender Kim Min-jae.

Sky Italia's Gianluca di Marzio is reporting United are watching the stopper this season after his arrival from Fenerbahce.

Di Marzio has also revealed Kim's contract carries a buyout clause, which comes into effect in June.

United will be able to sign Kim next summer if they match his €50m option.

Kim has scored two goals in six games in Serie A this season. He has also played the opening two matches in the Champions League.

The South Korea international joined Napoli for €18m from Fener.