Benfica president Luis Filipe Vieira admits they already have offers on the table for winger Angel di Maria.

The Argentina international this week welcomed talk of interest from Liverpool and Chelsea, while Manchester United boss Sir Alex Ferguson has also had the Argentina international scouted this season.

"There are offers from several important teams, so we must learn to resist temptation, because our goal is to win the championship and we can only achieve this if we keep our best players," said Vieira.

"Although I admit that maybe we should sell the player."