Steve Bruce has not ruled out taking his summer signing tally into double figures but admits he is already happy with his dealings.
The Sunderland manager has made nine buys this transfer window, as the Black Cats look to improve on last season's 10th place finish.
Amongst the new arrivals are former Manchester United duo Wes Brown and John O'Shea, but Bruce is always open to improvements.
"A manager's job is to keep knocking on the chairman's door, we don't want to be satisfied because we've got to keep improving," he told Sky Sports News.
"And if there's somebody who can improve us and it's right, then we'll look at it. But we're very, very happy with what we've done.
"We're very close to having a squad which resembles what we're looking for. But we're never satisfied us managers, so never say never."
Including loanees, Bruce has offloaded 10 players into the mix, and he admits there could be more departures from the Stadium of Light.
"I envisage one or two will be leaving the building, I would have thought," he said.
One of those likely to leave is Steed Malbranque, who is likely to return to France with St Etienne before the week is through.
Marcos Angeleri and George McCartney are also possible departures hinted at by Bruce.
"Steed's deal is in advanced talks and we might have something to report soon," Bruce said.
"Steed has one year left and we are in a position where we have decided to say OK he can go.
"We have not got a natural left midfielder but you tell me where they are. It is time Steed moved on and we wish him well.
"It might be two, three or four leaving in the next few days.
"We could also see Angeleri head back to Argentina with Estudiantes and George might be going too."