Sunderland manager Gus Poyet insists there will be change at the Stadium of Light as he is running short of patience with some players.
The Uruguayan, who took the helm in October, outlined his frustrations with the current squad, claiming the same players have seen three changes of management and still the Black Cats remain at the foot of the Premier League standings.
Sunderland have won just twice in their last 10 top-flight outings and are four points adrift of safety.
Poyet admits the precarious situation Sunderland find themselves in aggravates him and claims some members of the squad are testing his resolve.
"I am close to running out of patience with some players. Close," he said in The Sun.
"I'm fed up with the whole situation. We've now been bottom of the league this season for five months.
"We've had three different managers with this group of players and everybody keeps the team in the bottom somehow."
With the January transfer market now open, Poyet has vowed to ring the changes in the Sunderland squad as he believes persisting with the present formula will see them relegated.
"So I'm going to change something," he added. "I'm not going to go with the same group of players to the end because if I do it's going to be more difficult.
"I need to choose well and make sure that we get the ones that can really change the season around. That's simple."
The Black Cats have netted only 15 goals in their opening 20 Premier League ties, with first-choice striker Steven Fletcher scoring just three in 11 and Poyet insists if anyone is likely to change Sunderland's fortunes up front, it will be the Scotsman.
"Look at the stats," he said. "I see managers saying the more you put the ball in the box, the more chances you get to score.
"But we had 21 shots in one game, 19 in another and 16 the other day and hit the target once.
"He's our top scorer and he's the one who is going to score the goals and make the difference.
Poyet's Sunderland host League One Carlisle United on Saturday in the third round of the FA Cup and the 46-year-old is well aware of the threat they pose having led Brighton to giant-killings over Newcastle in the last two seasons; but concedes defeat would be an embarrassment.
"I would be embarrassed if we lost," he added. "There is no doubt about that.
"I remember one of my first games was in the FA Cup for Chelsea and there were many photographers taking pictures and I didn't understand why.
"They said they wanted to see if we were the ones to get knocked out by a lower league club.
"I don't want to be the picture in Monday morning's papers of the Premier League team that got knocked out."