Bruce’s men head to West Ham on Saturday with their front trio of Miguel Almiron, Joelinton and Allan Saint-Maximin – that cost a combined £78million – having mustered a single goal between them so far this season.
And with the likes of Andy Carroll and Dwight Gayle pushing for the chance to impress from the start, the manager’s patience may wear thin if he fails to get a return from the trip to the capital.
Bruce said: “I still think the front three in particular are still settling in. Of course it’s an issue and we have to improve on it, but I think we will get there.
“There’s two solutions – either I change the system or I change the personnel, so we’ll see how we go tomorrow and that’s the conundrum we face.
“To be fair to the club it has invested heavily and forward players are judged on how many goals they score.
“All of us have seen Almiron play and he lit up St James’s Park when he arrived in January. He’s had a few opportunities this year and he hasn’t taken one. Hopefully when one comes along it will give him the confidence to put a run together.”