Personal terms with the player, however, have yet to be agreed on.
The transfer will cost €35 million to complete, with an additional €10 million to be paid if certain bonuses are achieved, according to Benfica’s official statement.
Stone added a move for Keane is a “no-go.”
United’s interest in Lindelof emerged last year, and despite a crisis in defence during the 2016-17 season, manager Jose Mourinho opted not to seek reinforcements in the January window.
With questions asked of Smalling and Jones’ mentality and commitment, Lindelof apparently became a matter of importance this summer. He has the kind of ball-playing ability that Mourinho’s next-door neighbour, Pep Guardiola, would crave, as well as the presence of mind to deal with high-pressure situations.
Lindelof’s 1744 successful passes in the Portuguese top flight far surpassed any of his contemporaries at the position last season.
He helped Benfica win a domestic double, making 47 appearances in all competitions.
The transfer would represent a huge coup for the Lisbon giant, who signed Lindelof from Vasteras for a minuscule €60,000 fee in 2012.
A dispute over an additional €250,000 payment to Vasteras due to bonuses activated could well mean the Swedish minnow is entitled to a chunk of the money United has agreed to fork over.
In any case, Lindelof would fall short of Benfica’s record sale, set in 2012 when the club received €40 million for Axel Witsel.