Manchester City have agreed the £65million signing of Benfica defender Ruben Dias with Nicolas Otamendi travelling in the opposite direction for a separate £13.7m.
Both deals are subject to the agreement of personal terms at their prospective clubs.
The Portuguese giants made the announcement of the agreement via two statements.
In the first statement, Benfica said they had 'reached an agreement with Manchester City for the sale of all the rights of central defender Ruben Dias for the amount of 68million euros, plus an additional amount of 3.