Portugal U21 star Fabio Vieira is interesting Liverpool.

Correio da Manha says Liverpool could make a move for Vieira, with Mark Grujic part of a swap deal.

Vieira made 29 appearances for Porto last season including a Champions League start against Manchester City and is only gaining more attention after his nations' U21 European Championships victory.

Liverpool is one club monitoring his situation and could use one of their current players as part of a deal.

Grujic spent last season on loan at Porto and the side are said to be keen to make the move permanent although could be put off by the £15m asking price.

A player plus cash deal could be beneficial for both sides.