Lee Johnson has seen nine players depart over the course of the summer, while on three players have arrived at the Stadium of Light.
The additions of Alex Pritchard, Corry Evans and Callum Doyle represent a good start for the Black Cats, but there is no hiding from the fact that further new recruits are required.
Sunderland remain actively looking for defensive signings and have been linked with Tony Gallacher of Liverpool in recent days, with some claims that a deal was close.
And while Johnson wouldn’t comment on that individual earlier this week, he did admit that the club are ‘in the mix’ for a number of players.
"I've seen the media reports, we know of him [Gallacher]," he said.
"He's a player on a list of ten or twelve options.
"We always want two for every position, and the plan is always to go in with probably 20 senior players and maybe four of the better younger ones to supplement that.
"It's a long season and we saw how much those injuries affected us.
"We're in the market, and we'll see what happens.
"Sometimes these things can take a week, two weeks, sometimes they drop in a day.
"We're certainly in the mix for a few and depending on what has happened behind the scenes today, we'll see.
So who could be next to arrive at the Stadium of Light? We take a look.
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. SUNDERLAND, ENGLAND - MAY 09: A General view of the Stadium of Light prior to the Sky Bet League One match between Sunderland and Northampton Town at Stadium of Light on May 09, 2021 in Sunderland, England. (Photo by Pete Norton/Getty Images)
Sunderland eye Premier League swoop as ambitious £1.3million bid launched - plus Sheffield Wednesday, Portsmouth updates Photo: Pete Norton
. Danny Cowley eyeing loan deals
Portsmouth manager Danny Cowley is determined to use his final three loan slots wisely and bring in 'the very best' players available (Portsmouth News) Photo: George Wood
. Ipswich Town striker set for League Two trial
Ipswich frontman Tyreece Simpson is set to join Swindon Town on trial, with the view to securing a loan move to the League Two side (TWTD) Photo: Stephen Pond
. Wigan Athletic handed boost in winger pursuit
Wigan Athletic have been handed a boost in their pursuit of former Sunderland winger Jordan Jones - after it was revealed that Ipswich Town are not looking to seal a deal for the Rangers man (East Anglian Daily Times) Photo: Bryn Lennon
1. Danny Cowley eyeing loan deals
Portsmouth manager Danny Cowley is determined to use his final three loan slots wisely and bring in 'the very best' players available (Portsmouth News) Photo: George Wood
2. Ipswich Town striker set for League Two trial
Ipswich frontman Tyreece Simpson is set to join Swindon Town on trial, with the view to securing a loan move to the League Two side (TWTD) Photo: Stephen Pond
3. Wigan Athletic handed boost in winger pursuit
Wigan Athletic have been handed a boost in their pursuit of former Sunderland winger Jordan Jones - after it was revealed that Ipswich Town are not looking to seal a deal for the Rangers man (East Anglian Daily Times) Photo: Bryn Lennon
4. Sheffield Wednesday 'very close' to midfield signing
Sheffield Wednesday are 'very close' to signing Swansea City midfielder George Byers (Yorkshire Live) Photo: Alex Burstow