The Blues tied up the move for the 23-year-old Portugal international on Tuesday, paying a fee of £65.2million.
Left back is still an issue, and the club have been putting out feelers, including a look at Ajax's Nicolas Tagliafico.
But Guardiola was asked about any further deals being done before the deadline next Monday, and he replied: “I think it will be over.
"I don't know – maybe someone will want to leave. So we will see what happens until the end."