The Brazilian goalkeeper has all but completed his move to the Premier League club but there will be no official confirmation before Wednesday
Benfica goalkeeper Ederson was at Manchester City's training ground on Tuesday but official announcement of his £35 million transfer will have to wait.
A third-party issue means confirmation of City's second signing of the summer will not come until Wednesday at the earliest.
Benfica confirmed negotiations with City for the Brazilian goalkeeper to the Portuguese stock market on Tuesday afternoon, but stated a deal was not yet finalised.
Fifty per cent of the total transfer fee will go to Benfica, with the remaining 50% going to Ederson's former club Rio Ave, and 20% of that cut going to football agency Gestifute.