Former Sunderland midfielder Kieron Brady believes the Black Cats are not making enough investment into the squad to reach promotion.
The Wearside club did make a high profile addition in January with the loan addition of Roma midfielder Enzo Le Fee, but Brady is critical of the move only being a temporary one.
In comparison, promotion-challengers Sheffield United spent a reported £10m on striker Tom Cannon from Leicester City.
"If the club don't go up this particular season, I would be aghast if there isn't an outcry to the powers that be," Brady told BBC Radio Sunderland.