Benfica are keen to upgrade the deal of defender Victor Lindelof.
The Sweden international is being linked with Manchester United and Bayern Munich this month - and is aware of the interest.
O Jogo says rather than cash in on Lindelof, Benfica hope to secure him to a new deal.
United are pushing for the defender, it is claimed, and Benfica hope to fight them off by upgrading the player's buyout clause to €35 million.